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I'm wondering what happens to the oil that is burned in a well-tuned catalyst-equipped engine. Does is deposit on the exhaust valves, the exhaust manifolds, cat converters, etc. or is it blown out into the air? Also, what exactly deposits? I'd imagine primarily the HCs would deposit as coke or...

Here are the results from two consectutive UOAs from Scahaefer's for the Board's reading pleasure. Questions and/or comments are welcome. Vehicle: 2001 Trooper 3.5 liter gasoline Oil: Mobil 1 0W-40 Oil Filter: Mobil 1 for both intervals Air filter: original stock (Denso, made in Japan)...

Does anyone care to share some facts about all these new types of coolants? G05, G12, G30, G48, Dex-Cool, Toyota OEM Red, Honda OEM, etc. It wasn't too long ago when the only anti-freeze choice you had to make was whether you wanted to splurge on the Prestone, or cheap-out with the Xerex or the...

After reading a lot of good things about Auto RX, I decided to try it in my 1993 Camry wagon's engine. The car has the 5SFE engine and 155,000 miles. Car runs perfectly and just passed NJ state emmisions tests with extremely low levels (about one-tenth of allowable) of HC and NOx, and zero...

This is my first post to this interesting board. I never knew oil could be so darn interesting! I've read lots of really neat stuff on here, from the enthusiastic Patman and Bror Jace to the practical Bob, Terry, dragboat, etc. to the more academic angle of Molekule and Kevin D. Anyway here is...