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I track a 250whp turbo Miata with a 6-speed and run AMSoil MTG (must use GL-4). I recently put temp-strips on my trans case, away from the exhaust, and saw these temps indicated. Is this too hot and should I be concerned?

This is a built 1896cc motor with a turbo and run really, really, really hard at the track tuned at 11.5:1 AFR in load. This was the 2nd and 3rd "track days" on this motor after about 8k street miles. What are your thoughts on this? I should note that I have a weird issue where the WBO2 reads...

I have a turbo miata street/track toy. I'm running it at 11.5:1 in boost, with about2000 miles on the motor now. I changed the oil for the second time (after 500-mile break-in) and noticed that the Rotella 5w40 dino was very dark...well, as black as black can be. Oil temps never went above...

I searched, and don't know which oil to select, what change intervals to use, or what strategy to go with. I have a turbo miata with a built motor, do 1 or 2 track days per month, and drive my car on the street when the weather is nice. I'm not rich, so I'd like to save a little money if...