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    Joe Gibbs XP9 10W/40, GT3 track car

    Hi All, Can someone help me understand this. Is there a problem? Thanks Ray Comments: We're thinking the viscosity of this XP9 oil started as a 10W/40,but the viscosity at the oil change was a bit lower. Some fuel was present so that may have thinned the oil or maybe the oil started...
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    Another 'What should I use' question

    Hi All, I am ignorant about the science of engine oils - but am an engineer so I worry... The application is a Porsche 3.8l GT3 newly rebuilt motor. Car is a track car - spend most of its time ~ 8K rpm. Factory recommend fill is Mobil 1 0-40 - but that was for Mobil 1 designed in 2004. I had...
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    Best grease for CV joints - Krytox, Neo, Pankel,??

    Hi All, What are the top 4 or 5 cv joint grease for heavy duty racing applications - higher horsepower. I have read about the various Krytox, Pankel, and Neo greases, but there are probably plenty I don't know of. Thanks Ray
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