<VV> Best engine oil for late models

[jvhroberts at aol.com]

In the days of leaded fuel, nearly all the deposits were due to lead 
content in the fuel.

I've used nearly every oil out there in Corvair engines, and the only 
issues I've had (besides cooking the crap out of it!) were those tan 
and brown deposits on the back sides of the pistons and under the valve 
covers. Not sludge, but a hard to remove film. This was with racing 
oil, conventional oils, straight weight, multiweight, didn't matter. 
The only type of oil which showed a significant decrease in this stuff 
was Mobil 1, to no big surprise. But even that stuff would leave 
something behind, just not as bad. Now, this was always in turbo 
engines, all pushed pretty well beyond stock, so, my examples could be 
considered worst case scenarios.


-----Original Message-----
From: John Kepler <jekepler at amplex.net>
To: 'DONALD                    MEYER' <weldvair at embarqmail.com>; 'Marc 
Sheridan' <sheridanma1966 at gmail.com>
Cc: virtualvairs at corvair.org; mkpurt at yahoo.com
Sent: Thu, 22 Jan 2009 5:29 am
Subject: Re: <VV> Best engine oil for late models











Racing oil tends to leave deposits in the combution chamber. I would 
not use
it for street use. I just did a complete rebuild on my motor in which I 
used
racing oil  & the chambers were full of deposits.
Don M

True racing oils (Red-Line, etc), lack MANY if not all of the 
stabilizers
and anti-oxidants that make street oils last for many, many miles/hours 
of
use.  They aren't designed for the street, and shouldn't be used there.

As for deposits....I wouldn't blame the oil!

John


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