Quote:
Originally Posted by HWYSTR455
There is some truth to this, because some 'cheaper' oils back in the day use to use paraffin additives, or that was my understanding. The Olds I have came straight from PA, lived there it's whole life, was a grandma 350 2bbl daily driver for 200k miles, and look what I found when I pulled it....and this pic is after I already cleaned some of it out.
You should have seen what I found when I pulled a rocker cover...you couldn't even see pushrods....
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That rings true with me as well. Back in the 80s and 90s we would get engines & cylinder heads at the shop caked with black deposits like that. We called them "Jiffy Lube engines" because they were always from vehicles with 3,000 mile Jiffy Lube service running Quaker State or Penzoil. Some times you'd remove the valve covers and could not even see the valve springs or rocker arms.
