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Originally Posted By: SeaJay My tires have 78.09% nitrogen and I only paid fifty cents at the local filling station. Dang, 50 cents? Nobody around here charges for it.

Originally Posted By: ejes I can't remember where it is, but I just read a study where study showed, if I remember correctly, that regular air eventually seeps into the tire over time and dilutes whatever percentage of Nitrogen is in your tire. Interesting, I had been under the impression that...

I was wondering if there'd be anything wrong with trying a 50/50 mix of different oil weights, specifically Mobil-1 AFE 0W-30 and AFE 0W-20. I want to try a little bit thinner oil to see if it helps reduce the valvetrain noise I've always had with this engine (Chrysler SOHC 3.2L V6), as the...