Today's Message Index:
----------------------
1. 03:46 PM - Re: Re: Changing type of oil (Dave Abramson)
2. 04:53 PM - Re: Re: Changing type of oil (Steve Culp)
3. 09:27 PM - Re: Re: Changing type of oil (Eddie Moran)
4. 09:30 PM - Re: Re: Changing type of oil (Eddie Moran)
Message 1
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| Subject: | Re: Changing type of oil |
Steve!
Good to hear you are still out there!!!!
I would not really have any experience about oil, and M-14 Radials.....
I own one, but do not actually have one....
Hint Hint......
Dave
DO NOT ARCHIVE
-----Original Message-----
From: owner-m14pengines-list-server@matronics.com
[mailto:owner-m14pengines-list-server@matronics.com]On Behalf Of Steve
Culp
Sent: Thursday, December 03, 2009 11:02 AM
To: m14pengines-list@matronics.com
Subject: Re: M14PEngines-List: Re: Changing type of oil
Hi:
I usually stay out of these but, the time I have used a multivis,
other than the Phillips, it literally ran out of the engine when we shut
them down. We were standing around watching this in Louisiana on a hot
day. This has happened twice and we changed the oil back both times to
straight weight.
The Phillips has worked great for us in several engines with several
hundred hours in service. I used it for flying airshows for 10 years
without a hitch. And that is pretty sever usage as the plane is landed
hot in the summer in the South and usually did not have much drain
through of either the straight AeroShell 120 or the Phillips multivis.
In closing I would have to say for anyone who doubts George, Dennis,
or myself should just go try it and let us know how it works for you. I
always like hearing from test pilots about their experiences.<grin>
Steve Culp
Culp's Specialties
-------------------------------------------------------------------------
-----
From: George Coy <george@gesoco.com>
To: m14pengines-list@matronics.com
Sent: Thu, December 3, 2009 11:07:55 AM
Subject: RE: M14PEngines-List: Re: Changing type of oil
It is my understanding that there is an additive in the 15W50 that
will glaze over the rings in the air compressor. This is particularly
true at higher temperatures. (especially if the cooling blast tube is
not properly maintained) Aeroshell may have changed their formulation in
the last decade. Our experience in the middle 1990's particularly in
engines that were running on Russian oils was to steer clear of 15W50.
It is only our opinion. If you want a multi grade use the Phillips
Radial engine oils. they not only work well in our experience they are
lower cost.
George Coy
CAS Ltd.
714 Airport Rd.
Swanton VT 05488
802-868-5633 off
802-363-5782 cell
george.coy@gmail.com
http://coyafct.com/
SKYPE george.coy
-------------------------------------------------------------------------
-----
From: owner-m14pengines-list-server@matronics.com
[mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of Jan
Mevis
Sent: Thursday, December 03, 2009 11:53 AM
To: m14pengines-list@matronics.com
Subject: RE: M14PEngines-List: Re: Changing type of oil
I certainly do not question your experience, George and Dennis. But it
seems that your opinion about 15W50 is mainly based on someone
else=99s experiences. Very understandable and acceptable, because
we can=99t afford to test it all.
But why is the W15W50 not good? If you look at the specifications, it
has a much higher viscosity index than the W100.
It is slightly less dense (0.86 kg/l instead of 0.89 for W100 or W80)
but the kinematic viscosity is higher than W80 and slightly lower than
W100.
It has less carbon residue than W100, less sulphur, less ash, less
acidity. Has it been tested on Russian radials? Probably not. The
Russian Design Bureau does not accept it, but they don=99t know
it. It is accepted for all the Pratt and Whitney radials.
So, if you look at the specifications, it should be very good. Of
course, there are not many M14P engines left to test it thoroughly, and
I will certainly not test it on mine, I am perfectly satisfied with the
W100.
Can you explain why it would damage the air compressor?
The reason why I am interested, is the very humid climate we have in
West-Europe. Our engines should run regularly to boil the water out of
the oil, so that the water can=99t react with the combustion
byproducts of the tetra-ethyl lead in AVGAS 100LL: 0,56 g/l, MUCH more
than what we used to have in the former mogas with lead; perhaps one
other good reason to use MOGAS.
This reaction is acidic, and a cause for corrosion. Maybe the W100Plus
is the best answer to that. But the W100Plus is not officially accepted
either. In Europe, we don=99t have the liberty to use whatever we
want ...
Best regards,
Jan
From: owner-m14pengines-list-server@matronics.com
[mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of George
Coy
Sent: donderdag 3 december 2009 2:00
To: m14pengines-list@matronics.com
Subject: RE: M14PEngines-List: Re: Changing type of oil
I agree with Dennis about Aero shell 15W50. It can coke up your air
compressor in record time. 25W60 seems to be Ok and we use it a lot in
M14P engines.
George Coy
CAS Ltd.
714 Airport Rd.
Swanton VT 05488
802-868-5633 off
802-363-5782 cell
george.coy@gmail.com
http://coyafct.com/
SKYPE george.coy
href="http://www.aeroelectric.com">www.aeroelectric.com
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Message 2
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| Subject: | Re: Changing type of oil |
Hi Dave:=0AYour engine has been ready to ship for a long time I was waiting
on the payment for the cowl.=C2- I can ship Monday if you want to wait o
n the cowl.=C2- I still have the instructions for shipping.=0AThank you,
=0AFieona=0ACulp's Specialties=0A=0A=0A=0A=0A______________________________
__=0AFrom: Dave Abramson <davea@symbolicdisplays.com>=0ATo: m14pengines-lis
t@matronics.com=0ASent: Fri, December 4, 2009 5:43:09 PM=0ASubject: RE: M14
PEngines-List: Re: Changing type of oil=0A=0A=0ASteve!=0A=C2-=0AGood to h
ear you are still out there!!!!=0A=C2-=0AI would not really have any expe
rience about oil, and M-14 Radials.....=C2- I own one, =C2-but do not a
ctually have one....=0A=C2-=0AHint Hint......=0A=C2-=0ADave=0A=C2-=0A
DO NOT ARCHIVE=0A-----Original Message-----=0A>From: owner-m14pengines-list
-server@matronics.com [mailto:owner-m14pengines-list-server@matronics.com]O
n Behalf Of Steve Culp=0A>Sent: Thursday, December 03, 2009 11:02 AM=0A>To:
m14pengines-list@matronics.com=0A>Subject: Re: M14PEngines-List: Re: Chang
ing type of oil=0A>=0A>=0A>Hi:=0A>I usually stay out of these but,=C2- th
e time I have used a multivis, other than the Phillips, it literally=C2-r
an out of the engine when we shut them down.=C2- We were standing around
watching this in Louisiana on a hot day.=C2- This has=C2-happened twice
and we changed the oil=C2-back both times to straight weight.=0A>The Phi
llips has worked great for us in several engines with several hundred hours
in service.=C2- I used it for flying airshows for 10 years without a hit
ch.=C2- And that is pretty sever usage as the plane is landed hot in the
summer in the South and usually did not have much drain through of either t
he straight AeroShell 120 or the Phillips multivis.=0A>In closing I would h
ave to say for anyone who doubts George,=C2-Dennis, or myself=C2-should
just go try it and let us know how it works for you.=C2- I always like h
earing from test pilots about their experiences.<grin>=C2-=0A>Steve Culp
=0A>Culp's Specialties=0A>=0A>=0A>=0A________________________________=0AFro
m: George Coy <george@gesoco.com>=0A>To: m14pengines-list@matronics.com=0A>
Sent: Thu, December 3, 2009 11:07:55 AM=0A>Subject: RE: M14PEngines-List: R
e: Changing type of oil=0A>=0A>=0A>It is my understanding that there is an
additive in the 15W50 that will glaze over the rings in the air compressor.
This is particularly true at higher temperatures. (especially if the cooli
ng blast tube is not properly maintained) Aeroshell may have changed their
formulation=C2-in the last decade.=C2-Our experience in the middle 1990
's particularly in engines that=C2-were running on Russian oils was to st
eer clear of 15W50. =C2-=C2-It is only our opinion. If you want a multi
grade use the Phillips Radial engine oils. they not only work well in our
experience they are lower cost. =0A>=0A>George Coy=0A>CAS Ltd.=0A>714 Airpo
rt Rd.=0A>Swanton VT 05488=0A>802-868-5633 off=0A>802-363-5782 cell=0A>geor
ge.coy@gmail.com=0A>http://coyafct.com/=0A>SKYPE george.coy=0A>=0A>=0A>=0A_
_______________________________=0AFrom: owner-m14pengines-list-server@matro
nics.com [mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of
Jan Mevis=0A>Sent: Thursday, December 03, 2009 11:53 AM=0A>To: m14pengines-
list@matronics.com=0A>Subject: RE: M14PEngines-List: Re: Changing type of o
il=0A>=0A>=0A>I certainly do not question your experience, George and Denni
s. But it seems that your opinion about 15W50 is mainly based on someone el
se=99s experiences. Very understandable and acceptable, because we ca
n=99t afford to test it all.=0A>=C2-=0A>But why is the W15W50 not g
ood? If you look at the specifications, it has a much higher viscosity inde
x than the W100. =0A>=C2-=0A>It is slightly less dense (0.86 kg/l instead
of 0.89 for W100 or W80) but the kinematic viscosity is higher than W80 an
d slightly lower than W100.=0A>=C2-=0A>It has less carbon residue than W1
00, less sulphur, less ash, less acidity. Has it been tested on Russian rad
ials? Probably not. The Russian Design Bureau does not accept it, but they
don=99t know it. It is accepted for all the Pratt and Whitney radials
. =0A>=C2-=0A>So, if you look at the specifications, it should be very go
od. Of course, there are not many M14P engines left to test it thoroughly,
and I will certainly not test it on mine, I am perfectly satisfied with the
W100.=0A>=C2-=0A>Can you explain why it would damage the air compressor?
=0A>=C2-=0A>The reason why I am interested, is the very humid climate we
have in West-Europe. Our engines should run regularly to boil the water out
of the oil, so that the water can=99t react with the combustion bypr
oducts of the tetra-ethyl lead in AVGAS 100LL: 0,56 g/l, MUCH more than wha
t we used to have in the former mogas with lead; perhaps one other good rea
son to use MOGAS. =0A>=C2-=0A>This reaction is acidic, and a cause for co
rrosion. Maybe the W100Plus is the best answer to that. But the W100Plus is
not officially accepted either. In Europe, we don=99t have the liber
ty to use whatever we want ...=0A>=C2-=0A>Best regards,=0A>=C2-=0A>Jan
=0A>=C2-=0A>From:owner-m14pengines-list-server@matronics.com [mailto:owne
r-m14pengines-list-server@matronics.com] On Behalf Of George Coy=0A>Sent: d
onderdag 3 december 2009 2:00=0A>To: m14pengines-list@matronics.com=0A>Subj
ect: RE: M14PEngines-List: Re: Changing type of oil=0A>=C2-=0A>I agree wi
th Dennis about Aero shell 15W50. It can coke up your air compressor in rec
ord time. 25W60 seems to be Ok and we use it a lot in M14P engines. =0A>=C2
-=0A>George Coy=0A>CAS Ltd.=0A>714 Airport Rd.=0A>Swanton VT 05488=0A>802
-868-5633 off=0A>802-363-5782 cell=0A>george.coy@gmail.com=0A>http://coyafc
t.com/=0A>SKYPE george.coy=0A>=C2-=0A>=0A>=0A>href="http://www.aeroelec
tric.com">www.aeroelectric.com=0A>href="http://www.buildersbooks.com">www
.buildersbooks.com=0A>href="http://www.homebuilthelp.com">www.homebuilthe
lp.com=0A>href="http://www.matronics.com/contribution">http://www.matroni
cs.com/chref="http://www.matronics.com/Navigator?M14PEngines-List">http:/
/www.matronics.com/Navigator?M14PEngines-Listhref="http://forums.matronic
s.com">http://forums.matronics.com=0A>=0A>=0A>=0A>=0A>Electric www.buil="
http://www.matronics.com/contribution" rel=nofollow target=_blank>h="
http://www.matronics.com/Navigator?M14PEngines-List" rel=nofollow tar=
========0A>=0A>=0A>href="http://www.buildersbooks.com">www.
buildersbooks.com=0A>href="http://www.homebuilthelp.com">www.homebuilthel
p.com=0A>href="http://www.matronics.com/contribution">http://www.matronic
s.com/chref="http://www.matronics.com/Navigator?M14PEngines-List">http://
www.matronics.com/Navigator?M14PEngines-List=0A>href="http://forums.matro
nics.com">http://forums.matronics.com=0A>=0A>=0A>=0A>=0A>href="http://www
====
Message 3
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| Subject: | Re: Changing type of oil |
I owned on but just sold one...
--- On Fri, 12/4/09, Dave Abramson <davea@symbolicdisplays.com> wrote:
From: Dave Abramson <davea@symbolicdisplays.com>
Subject: RE: M14PEngines-List: Re: Changing type of oil
=0A=0A =0A=0A=0A#yiv1104277250 DIV {=0AMARGIN:0px;}=0A=0A=0ASteve!=0A=C2-
=0AGood =0Ato hear you are still out there!!!!=0A=C2-=0AI =0Awould not re
ally have any experience about oil, and M-14 Radials.....=C2- I =0Aown on
e, =C2-but do not actually have one....=0A=C2-=0AHint =0AHint......=0A
=C2-=0ADave=0A=C2-=0ADO NOT =0AARCHIVE=0A=0A -----Original Message----
-
From: =0A owner-m14pengines-list-server@matronics.com =0A [mailto:owner-m
14pengines-list-server@matronics.com]On Behalf Of Steve =0A Culp
Sent: Thursday, December 03, 2009 11:02 AM
Subject: Re: M14PEngines-List: Re: =0A Changing type of oil
=0A =0A Hi:
I usually stay out of these but,=C2- the time I have used a =0A multivis
, other than the Phillips, it literally=C2-ran out of the engine =0A whe
n we shut them down.=C2- We were standing around watching this in =0A Lo
uisiana on a hot day.=C2- This has=C2-happened twice and we changed the
=0A oil=C2-back both times to straight weight.=0A The Phillips has wor
ked great for us in several engines with several =0A hundred hours in serv
ice.=C2- I used it for flying airshows for 10 years =0A without a hitch.
=C2- And that is pretty sever usage as the plane is landed =0A hot in th
e summer in the South and usually did not have much drain through of =0A e
ither the straight AeroShell 120 or the Phillips multivis.=0A In closing I
would have to say for anyone who doubts George,=C2-Dennis, =0A or mysel
f=C2-should just go try it and let us know how it works for =0A you.=C2
- I always like hearing from test pilots about their =0A experiences.<gr
in>=C2-
Steve Culp=0A Culp's Specialties=0A
=0A =0A =0A From: George Coy =0A <george@gesoco.com>
Sent: Thu, December 3, 2009 11:07:55 =0A AM
Subject: RE: =0A M14PEngines-List: Re: Changing type of oil
=0A =0A #yiv1104277250 UNKNOWN {=0AFONT-FAMILY:Cambria Math;}=0A#yiv11042
77250 UNKNOWN {=0AFONT-FAMILY:Calibri;}=0A#yiv1104277250 UNKNOWN {=0AFONT-F
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PAN.MsoHyperlinkFollowed {=0ACOLOR:purple;TEXT-DECORATION:underline;}=0A#yi
v1104277250 PRE {=0AFONT-SIZE:10pt;MARGIN:0cm 0cm 0pt;FONT-FAMILY:"Courier
New";}=0A#yiv1104277250 SPAN.HTMLPreformattedChar {=0AFONT-FAMILY:Consolas;
}=0A#yiv1104277250 SPAN.EmailStyle19 {=0ACOLOR:#1f497d;FONT-FAMILY:"Calibri
", "sans-serif";}=0A#yiv1104277250 .MsoChpDefault {=0AFONT-SIZE:10pt;}=0A#y
iv1104277250 DIV.Section1 {=0A=0A}=0A=0A=0A It is my understanding that th
ere is an additive in the 15W50 =0A that will glaze over the rings in the
air compressor. This is particularly =0A true at higher temperatures. (esp
ecially if the cooling blast tube is not =0A properly maintained) Aeroshel
l may have changed their formulation=C2-in the =0A last decade.=C2-Our
experience in the middle 1990's particularly in engines =0A that=C2-wer
e running on Russian oils was to steer clear of 15W50. =0A =C2-=C2-It
is only our opinion. If you want a multi grade use the Phillips =0A Radial
engine oils. they not only work well in our experience they are lower =0A
cost. =0A =C2-=0A George Coy=0A CAS Ltd.=0A 714 Airport Rd.=0A Swan
ton VT 05488=0A 802-868-5633 off=0A 802-363-5782 cell=0A george.coy@gmai
l.com=0A http://coyafct.com/=0A SKYPE george.coy=0A =C2-
=0A =0A =0A From: =0A owner-m14pengines-list-server@matronics.com =0A
[mailto:owner-m14pengines-list-server@matronics.com] On Behalf Of Jan =0A
Mevis
Sent: Thursday, December 03, 2009 11:53 AM
Subject: RE: M14PEngines-List: Re: =0A Changing type of oil
=0A =0A =0A I =0A certainly do not question your experience, George and
Dennis. But it seems =0A that your opinion about 15W50 is mainly based on
someone else=99s experiences. =0A Very understandable and acceptabl
e, because we can=99t afford to test it =0A all.=0A =C2-=0A But
=0A why is the W15W50 not good? If you look at the specifications, it has
a much =0A higher viscosity index than the W100. =0A =C2-=0A It =0A i
s slightly less dense (0.86 kg/l instead of 0.89 for W100 or W80) but the
=0A kinematic viscosity is higher than W80 and slightly lower than =0AW100
.=0A =C2-=0A It =0A has less carbon residue than W100, less sulphur, l
ess ash, less acidity. Has =0A it been tested on Russian radials? Probably
not. The Russian Design Bureau =0A does not accept it, but they don
=99t know it. It is accepted for all the Pratt =0A and Whitney radials.
=0A =C2-=0A So, =0A if you look at the specifications, it should be ve
ry good. Of course, there =0A are not many M14P engines left to test it th
oroughly, and I will certainly not =0A test it on mine, I am perfectly sat
isfied with the W100.=0A =C2-=0A Can =0A you explain why it would dama
ge the air compressor?=0A =C2-=0A The =0A reason why I am interested,
is the very humid climate we have in West-Europe. =0A Our engines should r
un regularly to boil the water out of the oil, so that the =0A water can
=99t react with the combustion byproducts of the tetra-ethyl lead in
=0A AVGAS 100LL: 0,56 g/l, MUCH more than what we used to have in the form
er mogas =0A with lead; perhaps one other good reason to use MOGAS. =0A
=C2-=0A This =0A reaction is acidic, and a cause for corrosion. Maybe t
he W100Plus is the best =0A answer to that. But the W100Plus is not offici
ally accepted either. In Europe, =0A we don=99t have the liberty to
use whatever we want ...=0A =C2-=0A Best =0A regards,=0A =C2-=0A J
an=0A =C2-=0A =0A =0A From: =0A owner-m14pengines-list-server@matron
ics.com =0A [mailto:owner-m14pengines-list-server@matronics.com] On Behalf
Of =0A George Coy
Sent: donderdag 3 december 2009 2:00
Subject: RE: M14PEngines-List: Re: =0A Changing type of oil=0A =C2-=0A
I agree with Dennis =0A about Aero shell 15W50. It can coke up your air c
ompressor in record time. =0A 25W60 seems to be Ok and we use it a lot in
M14P engines. =0A =0A =C2-=0A George =0A Coy=0A CAS =0A Ltd.=0A 71
4 =0A Airport Rd.=0A Swanton VT =0A 05488=0A 802-868-5633 off=0A 802-3
63-5782 cell=0A george.coy@gmail.com=0A http://coyafct.com/=0A SKYPE =0A
george.coy=0A =0A =C2-
href="http://www.aeroelectric.com">www.aeroelectric.com
href="http://www.buildersbooks.com">www.buildersbooks.com
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ef="http://www.matronics.com/Navigator?M14PEngines-List">http://www.matro
nics.com/Navigator?M14PEngines-Listhref="http://forums.matronics.com">htt
p://forums.matronics.com
Electric www.buil="http://www.matronics.com/contribution" rel=nofollow
target=_blank>h="http://www.matronics.com/Navigator?M14PEngines-List" r
el=nofollow tar=======
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href="http://www.buildersbooks.com">www.buildersbooks.com
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ef="http://www.matronics.com/Navigator?M14PEngines-List">http://www.matro
nics.com/Navigator?M14PEngines-List
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Message 4
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| Subject: | Re: Changing type of oil |
Steve,=C2- Hi. Sold my Moose and cleaning up loose ends.=C2- Can you ch
eck and see if I owe you any money.
Eddie Moran
--- On Fri, 12/4/09, Steve Culp <culpspecial@yahoo.com> wrote:
From: Steve Culp <culpspecial@yahoo.com>
Subject: Re: M14PEngines-List: Re: Changing type of oil
Hi Dave:=0AYour engine has been ready to ship for a long time I was waiting
on the payment for the cowl.=C2- I can ship Monday if you want to wait o
n the cowl.=C2- I still have the instructions for shipping.=0AThank you,
=0AFieona=0ACulp's Specialties
=0A
=0A=0A=0AFrom: Dave Abramson <davea@symbolicdisplays.com>
Sent: Fri, December 4, 2009 5:43:09 PM
Subject: RE: M14PEngines-List: Re: Changing type of oil
=0A =0A#yiv862123084 DIV {=0AMARGIN:0px;}=0A=0A=0ASteve!=0A=C2-=0AGood to
hear you are still out there!!!!=0A=C2-=0AI would not really have any ex
perience about oil, and M-14 Radials.....=C2- I own one, =C2-but do not
actually have one....=0A=C2-=0AHint Hint......=0A=C2-=0ADave=0A=C2-
=0ADO NOT ARCHIVE=0A=0A-----Original Message-----
From: owner-m14pengines-list-server@matronics.com [mailto:owner-m14pengines
-list-server@matronics.com]On Behalf Of Steve Culp
Sent: Thursday, December 03, 2009 11:02 AM
Subject: Re: M14PEngines-List: Re: Changing type of oil
=0A=0AHi:
I usually stay out of these but,=C2- the time I have used a multivis, oth
er than the Phillips, it literally=C2-ran out of the engine when we shut
them down.=C2- We were standing around watching this in Louisiana on a ho
t day.=C2- This has=C2-happened twice and we changed the oil=C2-back
both times to straight weight.=0AThe Phillips has worked great for us in se
veral engines with several hundred hours in service.=C2- I used it for fl
ying airshows for 10 years without a hitch.=C2- And that is pretty sever
usage as the plane is landed hot in the summer in the South and usually did
not have much drain through of either the straight AeroShell 120 or the Ph
illips multivis.=0AIn closing I would have to say for anyone who doubts Geo
rge,=C2-Dennis, or myself=C2-should just go try it and let us know how
it works for you.=C2- I always like hearing from test pilots about their
experiences.<grin>=C2-
Steve Culp=0ACulp's Specialties=0A
=0A=0A=0AFrom: George Coy <george@gesoco.com>
Sent: Thu, December 3, 2009 11:07:55 AM
Subject: RE: M14PEngines-List: Re: Changing type of oil
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=0A#yiv862123084 .MsoChpDefault {=0AFONT-SIZE:10pt;}=0A#yiv862123084 DIV.Se
ction1 {=0A=0A}=0A=0A=0AIt is my understanding that there is an additive in
the 15W50 that will glaze over the rings in the air compressor. This is pa
rticularly true at higher temperatures. (especially if the cooling blast tu
be is not properly maintained) Aeroshell may have changed their formulation
=C2-in the last decade.=C2-Our experience in the middle 1990's particul
arly in engines that=C2-were running on Russian oils was to steer clear o
f 15W50. =C2-=C2-It is only our opinion. If you want a multi grade use
the Phillips Radial engine oils. they not only work well in our experience
they are lower cost. =0A=C2-=0AGeorge Coy=0ACAS Ltd.=0A714 Airport Rd.=0A
Swanton VT 05488=0A802-868-5633 off=0A802-363-5782 cell=0Ageorge.coy@gmail.
com=0Ahttp://coyafct.com/=0ASKYPE george.coy=0A=C2-
=0A=0A=0AFrom: owner-m14pengines-list-server@matronics.com [mailto:owner-m1
4pengines-list-server@matronics.com] On Behalf Of Jan Mevis
Sent: Thursday, December 03, 2009 11:53 AM
Subject: RE: M14PEngines-List: Re: Changing type of oil
=0A=0A=0AI certainly do not question your experience, George and Dennis. Bu
t it seems that your opinion about 15W50 is mainly based on someone else
=99s experiences. Very understandable and acceptable, because we can
=99t afford to test it all.=0A=C2-=0ABut why is the W15W50 not good? I
f you look at the specifications, it has a much higher viscosity index than
the W100. =0A=C2-=0AIt is slightly less dense (0.86 kg/l instead of 0.89
for W100 or W80) but the kinematic viscosity is higher than W80 and slight
ly lower than W100.=0A=C2-=0AIt has less carbon residue than W100, less s
ulphur, less ash, less acidity. Has it been tested on Russian radials? Prob
ably not. The Russian Design Bureau does not accept it, but they don
=99t know it. It is accepted for all the Pratt and Whitney radials. =0A=C2
-=0ASo, if you look at the specifications, it should be very good. Of cou
rse, there are not many M14P engines left to test it thoroughly, and I will
certainly not test it on mine, I am perfectly satisfied with the W100.=0A
=C2-=0ACan you explain why it would damage the air compressor?=0A=C2-
=0AThe reason why I am interested, is the very humid climate we have in Wes
t-Europe. Our engines should run regularly to boil the water out of the oil
, so that the water can=99t react with the combustion byproducts of t
he tetra-ethyl lead in AVGAS 100LL: 0,56 g/l, MUCH more than what we used t
o have in the former mogas with lead; perhaps one other good reason to use
MOGAS. =0A=C2-=0AThis reaction is acidic, and a cause for corrosion. Mayb
e the W100Plus is the best answer to that. But the W100Plus is not official
ly accepted either. In Europe, we don=99t have the liberty to use wha
tever we want ...=0A=C2-=0ABest regards,=0A=C2-=0AJan=0A=C2-=0A=0A=0A
From: owner-m14pengines-list-server@matronics.com [mailto:owner-m14pengines
-list-server@matronics.com] On Behalf Of George Coy
Sent: donderdag 3 december 2009 2:00
Subject: RE: M14PEngines-List: Re: Changing type of oil=0A=C2-=0AI agree
with Dennis about Aero shell 15W50. It can coke up your air compressor in r
ecord time. 25W60 seems to be Ok and we use it a lot in M14P engines. =0A
=0A=C2-=0AGeorge Coy=0ACAS Ltd.=0A714 Airport Rd.=0ASwanton VT 05488=0A80
2-868-5633 off=0A802-363-5782 cell=0Ageorge.coy@gmail.com=0Ahttp://coyafct.
com/=0ASKYPE george.coy=0A=0A=C2-
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