Today's Message Index:
----------------------
1. 03:51 AM - Re: 912ULS Recommended Oil (Thom Riddle)
2. 07:38 AM - Re: Re: 912ULS Recommended Oil (Noel Loveys)
3. 08:07 AM - Re: 912ULS Recommended Oil (Thom Riddle)
4. 11:36 AM - Re: 912ULS Recommended Oil (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 912ULS Recommended Oil |
Roger,
MIneral oils adhere better to the metal surfaces than synthetics when idle. This
better protects the surfaces from exposure to the elements that can cause corrosion
during non-operating periods.
--------
Thom Riddle
Buffalo, NY (9G0)
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x32
If life gives you limes, make Margaritas.
- Jimmy Buffet
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304565#304565
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 912ULS Recommended Oil |
Synthetic oils are super slippery and from what I've read they just don't do
the job of protecting metal parts if left for a period of time. Mineral
oils are much more protective. So if a plane is being flown almost every
day no doubt about it synthetic is the way to go. If though you only fly
say once a month then mineral will be better. Either way with two stroke
engines use low ash oils and with the 912 series use a good quality
motorcycle oil.
You are right about mineral oil becoming acidic and for some reason
mechanics say that it's better in the differential of the car to have older
seasoned oil in it. The manual on my father's old '64 Jeep said to change
the oil every 20K miles... I think. That is the reason why I change my oil
as soon as the car comes out of storage for the winter.
As for which oil is best... That's like asking whose wife is best.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee
Sent: July 11, 2010 11:11 AM
Subject: RotaxEngines-List: Re: 912ULS Recommended Oil
Howdy Noel,
Why would your prefer the mineral oil for infrequent type flying over
synthetic? I'm trying to pull out of memory about mineral oil after months
of just sitting is more likely to become more acidic than a synthetic. I
can't remember the direct info though.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304459#304459
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 912ULS Recommended Oil |
I don't know if old mineral oil becomes acidic or not. Perhaps the stuff it picks
up from circulating in the engine may become acidic, but I'm skeptical that
the oil itself does.
Following is an excerpt from WIKIPEDIA entry on Mineral Oil (I know it may not
be authoritative, but I think this one is based on the bibliography).
WIKI EXCERPT
Preservative
Since it does not absorb atmospheric moisture, mineral oil is useful as a protective
coating or bath for water-sensitive materials. Alkali metals like lithium
are often submerged in mineral oil for storage or transportation.
Mineral oil is also often used as a coating on metal tools and weapons, knives
in particular, as a way to inhibit oxidation. The Japanese Nihonto swords, for
example, are traditionally coated in Choji oil which consists of 99% mineral
oil and 1% oil of cloves. The use of oil of cloves is sometimes explained as a
means of differentiating sword oil from cooking oil to prevent accidental ingestion,
but may also be purely aesthetic.
My Opinion
If it is used as a long term storage coating then it is unlikely that the mineral
oil is becoming acidic. I would bet that an engine run the same amount of time
on mineral oil and synthetic oil then let to sit for an extended period would
exhibit similar acidic properties, whatever they are and whatever the source
but this is just my guess. I've not seen any tests comparing this particular
quality between mineral oil and synthetic.
As others have noted, changing the oil before long term storage is a very good
idea. Aeroshell's preservative oil is 40 wt mineral oil (80 in Aeroshell terms)
and that is what I use for winter preservation oil on Rotax, Jabiru, and Lycoming
engines.
--------
Thom Riddle
Buffalo, NY (9G0)
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x32
If life gives you limes, make Margaritas.
- Jimmy Buffet
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304586#304586
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 912ULS Recommended Oil |
Thanks Noel and Thom for the info.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304609#304609
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|