Today's Message Index:
----------------------
1. 11:07 AM - Re: 912 UL for sale (fjocampo)
2. 02:19 PM - 912ULS Coolant (Tommy Walker)
3. 02:44 PM - Re: 912ULS Coolant (Ken Arnold)
4. 05:35 PM - Re: 912ULS Coolant (Roger Lee)
5. 05:53 PM - Re: Re: 912ULS Coolant (Ken Arnold)
6. 06:00 PM - Re: 912ULS Coolant (Tommy Walker)
Message 1
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| Subject: | Re: 912 UL for sale |
I need a rotax 912 only the engine
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=254809#254809
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Ro-Taxers,
I think most 912 owners in the U.S. use dex cool antifreeze in a 50/50 ratio in
their cooling systems.
I have a gallon of Prestone 50/50 premix that states it can be mixed with any glycol
type antifreeze.
Is anyone using this brand and do you have any comments about using it?
Thanks,
Tommy Walker in Alabama
Do Not Archive
--------
Tommy Walker
N8701 - Anniston, AL
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=254821#254821
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| Subject: | Re: 912ULS Coolant |
I have a 912ULS that cost about $20,000. Why would you take a chance. Why
not drain it and fill it up with a known antifreeze? Seems like a more cost
effective insurance.
Ken
do not archive
----- Original Message -----
From: "Tommy Walker" <twalker@cableone.net>
Sent: Sunday, July 26, 2009 5:18 PM
Subject: RotaxEngines-List: 912ULS Coolant
> <twalker@cableone.net>
>
> Ro-Taxers,
>
> I think most 912 owners in the U.S. use dex cool antifreeze in a 50/50
> ratio in their cooling systems.
>
> I have a gallon of Prestone 50/50 premix that states it can be mixed with
> any glycol type antifreeze.
>
> Is anyone using this brand and do you have any comments about using it?
>
> Thanks,
> Tommy Walker in Alabama
>
> Do Not Archive
>
> --------
> Tommy Walker
> N8701 - Anniston, AL
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=254821#254821
>
>
>
Message 4
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| Subject: | Re: 912ULS Coolant |
Hi Tommy,
Most any will work. Only so many ways to make antifreeze. Any 50/50 will work.
Needs to be silicate free. Some antifreeze's don't mix with DexCool. Make sure
that if you use a DexCool antifreeze that you only put something back in that
is Dex Cool compatible. If you need to just top off a low reserve tank then distilled
water works best. If you are changing your coolant then flush out any
old DexCool before putting something else back in.
WHY, because
In particular, alkali metal silicates have been found excellent for protecting
aluminum
against corrosion. In glycol-based radiator protectants, however, they tend to
form
gels or even to precipitate, so creating a need for special silicate stabilizers.
Examples of constituents of such combinations of active substances include salts
of
organic acids which, especially in the form of their alkali metal salts, are efficient
corrosion inhibitors, whereas the free acids are less effective or may even be
corrosive.
The incidence of free acids in radiator protectant formulations as a possible result,
for example, of oxidation processes or the ingress of nitrous gases into the cooling
system is therefore highly undesirable. It is for this reason that radiator protectant
formulations contain small amounts of agents known as reserve alkalinity donors
which have a buffer action in the relevant pH range and so prevent the formation
of free acids. Examples of compounds employed as reserve alkalinity donors are
amines and phosphates and, in particular, the less expensive borax. Such corrosion
inhibitor compositions are described, for example, in EP-B-0 229 440 and
EP-A-0 308 037.
Because of the above-described disadvantages associated with the use of silicates
as
corrosion inhibitors for aluminum, in recent developments a trend has been noted
to
omit them and instead use other active substances. Under these conditions, however,
the reserve alkalinity donor, borax, is highly corrosive, and so can no longer
be used.
The use of phosphates in modern-day radiator protectant formulations is likewise
undesirable. This applies to an even greater extent to amines, on the basis of
their
characterization as potential nitrosamine formers."
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=254833#254833
Message 5
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| Subject: | Re: 912ULS Coolant |
Hey Rog,
What does one of those nitrosamines look like? I got to check my fluids.
Ken
do not archive
----- Original Message -----
From: "Roger Lee" <ssadiver1@yahoo.com>
Sent: Sunday, July 26, 2009 8:34 PM
Subject: RotaxEngines-List: Re: 912ULS Coolant
>
> Hi Tommy,
>
> Most any will work. Only so many ways to make antifreeze. Any 50/50 will
> work. Needs to be silicate free. Some antifreeze's don't mix with DexCool.
> Make sure that if you use a DexCool antifreeze that you only put something
> back in that is Dex Cool compatible. If you need to just top off a low
> reserve tank then distilled water works best. If you are changing your
> coolant then flush out any old DexCool before putting something else back
> in.
>
> WHY, because
>
> In particular, alkali metal silicates have been found excellent for
> protecting aluminum
> against corrosion. In glycol-based radiator protectants, however, they
> tend to form
> gels or even to precipitate, so creating a need for special silicate
> stabilizers.
>
> Examples of constituents of such combinations of active substances
> include salts of
> organic acids which, especially in the form of their alkali metal salts,
> are efficient
> corrosion inhibitors, whereas the free acids are less effective or may
> even be corrosive.
> The incidence of free acids in radiator protectant formulations as a
> possible result,
> for example, of oxidation processes or the ingress of nitrous gases into
> the cooling
> system is therefore highly undesirable. It is for this reason that
> radiator protectant
> formulations contain small amounts of agents known as reserve alkalinity
> donors
> which have a buffer action in the relevant pH range and so prevent the
> formation
> of free acids. Examples of compounds employed as reserve alkalinity donors
> are
> amines and phosphates and, in particular, the less expensive borax. Such
> corrosion
> inhibitor compositions are described, for example, in EP-B-0 229 440 and
> EP-A-0 308 037.
>
> Because of the above-described disadvantages associated with the use of
> silicates as
> corrosion inhibitors for aluminum, in recent developments a trend has been
> noted to
> omit them and instead use other active substances. Under these conditions,
> however,
> the reserve alkalinity donor, borax, is highly corrosive, and so can no
> longer be used.
> The use of phosphates in modern-day radiator protectant formulations is
> likewise
> undesirable. This applies to an even greater extent to amines, on the
> basis of their
> characterization as potential nitrosamine formers."
>
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Service Center
> 520-574-1080
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=254833#254833
>
>
>
Message 6
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| Subject: | Re: 912ULS Coolant |
Ken,
Thanks for your reply. I was under the impression that Prestone was the most popular
anti-freeze in the U.S., but then, what do I know?
Tommy
Do Not Archive.
arno7452(at)bellsouth.net wrote:
> I have a 912ULS that cost about $20,000. Why would you take a chance. Why
> not drain it and fill it up with a known antifreeze? Seems like a more cost
> effective insurance.
>
> Ken
>
> do not archive
>
>
>
>
>
> ---
--------
Tommy Walker
N8701 - Anniston, AL
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=254836#254836
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