chilphil Posted September 28, 2006 Share Posted September 28, 2006 I recently found out that the Lube Shop that my wife has been bringing the car to only uses Pennzoil. I have been a Castrol fan for as long as I can remember and would prefer Castrol in my cars....just a preference, no real validity or scientific claim for the preference. I did hear somewhere that (and I don't know if it only applies to Toyota engines) Pennzoil builds up sludge more easily than other conventional oils. Is that true? If so, should I switch ASAP? What are your oil preferences? Quote Link to comment Share on other sites More sharing options...
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