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Donny,
I had a wear problem in my daily driver 325i for a while, elevated copper and rising. It was recommended that I try Rotella T6 5W-40. Over the course of several months with the T6 (I drive a lot of miles) the copper returned to normal and is now lower than it has ever been. I'm totally sold on the T6.
I've heard several over on Rennlist use T6 5W-40 in their 996 Turbos.
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Kurt
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