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Originally Posted By: Audi Junkie 15w-50 is thicker when hot, very thick. The best bet is to pick an oil and then do a lab analysis on it after some use to see how much metallic wear came off from your engine. A general rule is to use the thinnest oil that will not produce excess wear. Likely a...

Thanks guys, what would the difference be between 15w40 and 15w50? Engine is stock compression 10.0:1

Originally Posted By: Mau Try Pennzoil Platinum 5w30. Run it in our RDX (turbo as well) and feels like a well deserved oil and should be fine with your turbo application. How much boost are you running on? Thanks - What is PP? It is running 9psi of boost.

Wow! Lots of input. Thanks guys. I don't have an oil temp gauge yet. I will do some reading up on used oil analysis. Is there any general rule of thumb of NA cars vs. forced induction? It seems like guys with high HP turbo setups are always trying to have higher oil pressure by running...

Hi, I recently bought an Acura Integra that has had a turbo added. The tuner that installed it said to run synthetic 15w 50 oil. I then read this article Ferrarichat board Oil 101 which makes me think I should run something thinner like 10w30. The car has all stock internals and is running a...