<VV> Oil [now Leaks]

[Dale Dewald]

On 10/25/2017 19:13, Ed Gilroy wrote:
 >>snip<<
> Small sample size examples:
>
>      My wife has a 2012 Honda CRV with 225K on the clock, I have used Mobil1
> 0W20 from day one, NEVER put a makeup quart in it and changed it at 7,500
> mile interval oil changes. My daily driver is a 2008 Honda Civic with 145K
> on it. Mobil1 5W30 from day one, NEVER put a makeup quart in it, ever. same
> 7,500 mi oil changes. My Harley Tri Glide has 52k miles on it, use Red Line
> 20W50 Synthetic since day one, NEVER put a makeup quart in it. 5k oil
> change interval. My corvair has 120K on it and leaks like a sieve, I use
> 20W50 dino and add oil just about every other time I drive it!!!
Two more examples:

Our '65 Greenbrier now has 25K miles on the rebuilt modified 110 engine 
by Ken Hand.  I have used Amsoil 10W-30 since the rebuild. There are NO 
oil leaks whatsoever.  Oil consumption is about 1 qt/3500 mi; very good 
for 1960's engine technology.

My wife's '65 Monza was purchased in 1999 with a recently rebuilt +0.060 
110.  We have put 40k+ miles on that car.  At the first oil change in 
1999 I put in Mobil 1 and the rear main seal promptly started leaking. I 
switched to Valvoline High Mileage and it quit. I then put in a new rear 
main seal and went back to Mobil 1, then Mobil 1 High Mileage.  There 
are no leaks whatsoever on this engine either.  Oil consumption is about 
1 qt/2500 miles.

I suspect that the observed oil consumption on well running "tight" 
Corvair engines is not so much through the rings, but as loss by 
mist/vapor that gets by the primitive PVC system.

Dale Dewald
Hancock, MI