Engine oil

I didn't mean to start a fight.

What are you running Cudafever ?

The article...auto restoration - summer 09...I think I bought this in December :) The article was called "death by oil".



ZDP (zinc dithiophosphate) was first added to control bearing corrosion..then increased for camshafts. At .14 %T, it actually increasers wear.

Both zinc and phosphate are key to preventing wear. And wild&crazy is right, kill catalytic converters. The older engines should have combo of both of the above at a ratio of .12 to .14%. With SM oil, you can reduce these numbers to .06 to .08%.

. do not use sm type oil if you drive a few thousand of miles each summer.

. avoid oils that say energy conserving

. you can use sm oil if you augment 1/2 ounce of gm EOS for each quart..do not asdd more..more is not better with EOS.

. you can use the diesel ci-4 but not cj-4

. do not use a synthetic if it hasn't been used since day one in an engine

do not switch to a detergent containing oil if a non detergent has been used

buddy uses 15w40


I guess my first question is what the heck is SM ?

I wonder if Schaeffer has that % ratio..I wonder if this is sold in Canada.

For my MG and Vaux, I didn't worry but I used to throgh a can of castrol for every oil change.

I have a chance to do it right with the new engine.

Are there more suggestions out there ?

Thanks
Ian.