REFLECTOR: Engine Oil: Survey

[jerry at jlbent.com]

Mark,

The lead issue with synthetic oil was something that became a very
expensive misdirection for Exxon (I think it was Exxon, but not positive)
may 15 years ago.  I am a little vague on the details, but this is what I
recall.  An aircraft oil company brought out a 100% synthetic Aircraft
engine oil before the details of the lead problem we understood.  The end
result was the oil company had to pay to have a lot of engines rebuilt
because the lead problem was causing failures.  After that, no one would
formulate a 100% synthetic oil for long term use with leaded gasoline.


Jerry Brainard
Jerry at JLBEnt.com


  	-------Original Message-------
From: Mark Magee
To: Velocity Aircraft Owners and Builders list
Cc: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Engine Oil: Survey
Sent: Jun 13 '12 8:42am


All,
This was as I feared, no one using Racing Grade auto synthetic. The data
suggests that only the mineral based engine oils will effectively keep the
lead in suspension, and keep it from sticking to vital parts (rings, piston
skirt etc.) Unless someone has data otherwise I'll close out this thread
and stick with Aeroshell or comparables.
Thanks to all who chimed in. Until the lead is gone, we will be using
mineral based oil I suppose.

Mark B. Magee
Sent from IPhone 4

On Jun 13, 2012, at 7:56 AM, Jones Nick <[LINK:
mailto:nick.jones at volvo.com] nick.jones at volvo.com> wrote:


I am using Phillips 100AW in the summer and Phillips X/C 20W50 plus ASL
Camguard in my Lycoming here in VA. Engine has 2000 hours without a
problem.


Best regards,


Nick and Connie Jones

Velocity XL-RG

N10CN

99% done 90% to go


FROM: [LINK: mailto:reflector-bounces at tvbf.org] reflector-bounces at tvbf.org
[mailto:reflector-bounces at tvbf.org] ON BEHALF OF Mark Magee
SENT: Tuesday, June 12, 2012 5:53 PM
TO: Velocity Aircraft Owners and Builders list
SUBJECT: REFLECTOR: Engine Oil: Survey


All,
The discussions on heat, oil and water spurred me to start this thread and
ask if anyone is running anything other than Aeroshell, particularly in a
LYC/CONT?
For brevity I'll pose these questions:
1) Lycoming, Contenental, Auto (specify):
2) Aeroshell Only
2A) If additives what additive and ratio:
3) Other Oil: Specify
3A) If additives with Other Oil what Additive:
4) Oil Analysis performed?
4A) Results of Oil Analysis (general terms: how many hours deemed OK before
dropping oil):
Please include comments.

We all know the certified engine mfgs will only approve Aeroshell and P-66
for they have the STC. From my study the only difference in certified GA
engines and automotive engines is the lead in the fuel, and that Shell
claims they neutralize the effects of the lead in the oil and that auto oil
mfgs do not have to deal with lead anymore. I know folks are running
Castrol Synthetic, Royal Purple, Redline, Mobil One, Amsoil and other
synthetics in certificated engines. I can't see a negative to this, someone
please tell me specifically how I am wrong. If touting Aeroshell then
please be as chemically specific as possible and cite data (links).
I am ready to change to an automotive synthetic racing oil. This would
provide quite a layer of protection should I (we) run hot on a climbout.
The synthetics don't really start to get into breakdown until approaching
400F.

Let's see what the cat drags home!

Mark Magee
N34XL XLFG 300HP
Brady TX

'Texan by Birth, Canardian by Choice.'


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