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    O'Reillys 5w30 Full Synthetic caution

    @dwe123, what you are describing on you Passat sounds like the beginning of the classic VW 1.8T engine sludge. There is probably just enough sludge covering the oil pickup that you are getting the oil light at higher rpm. Very soon, you will get this oil light no matter what type of oil you...
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    Jeep 3.7L engine - dirty oil

    I recently bought an '05 Grand Cherokee with the 3.7L engine. I changed the oil about 1,000 miles ago, at 37k. It's a little over 38k now, and the oil looks pretty dirty on the dipstick. At the last fill, I dropped in what I had at home - a few quarts of Quaker State and a few quarts of...
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