Paul,
I change oil in my car each year when getting my yearly

inspection.

Have been using Mobil 1 for over thirty years.  Did a valve

job on my 626

some years ago
and the mechanic who did the grinding for me asked what type

oil I used

as the valve stems were and guides were worn less than .0005.

This was with

113000
miles on the car.  He immediately switched to using Mobil1 in

his

vehicles.
I will not say I'm using it in my 0-235 since new.
Fly fast, land slow.
Bill

I think due to its higher temp capability it would be ideal for

valve

guide lube. Here is that valve temp chart again. Course auto

engine

valves stems run a lot cooler than aircraft engine valve stems.
That is one reason they don't cost $100 to $300 EACH!
It is a wonder to me air craft engine exhaust valves last
as long as they do.
Paul

Hi guys! Good to be back for a while... ;-(

Getting caught up on messages. And this one caught my eye.

DON'T RUN MOBIL1 WITH AVGAS!!! YOU WILL SUFFER BLOCKED OIL

PASSAGES AND ENGINE

FAILURE!!!!

Mobil1 will not properly disperse the lead left in the engine from

blowby gasses.

Standard old crappy oil and semi-synthetic blends (run 50%/50%

might work....) will

chemically react with the lead compounds and suspend it properly

till oil change. I

would guess if you are flying with mogas this is a non-problem.

This is why it got yanked off the market after a few accidents

proved this sorry fact

out.

I run 15w-50 all year long in my bikes and cars.
Blake

Come to think of it I vaguely heard that someplace.
I forgot about that Blake. Thanks.
Too bad.

Paul Lamar

        Aircraft oils are ashless.Auto oils are not, Virg

 
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