Quote Originally Posted by bail View Post
It could probably be burning oil since there are no visible leaks? so 20w50 is thin?
20W50 was the "universal grade" in the 70s...
today's oil grades are a tad thinner... 40 ?

if one wanted to hide one's engine's defects, just until it is sold out of his hands, one would tend to use a thicker oil. i think.