Quote:
Originally Posted by GZ3
Amsoil seems to be great oil and doesnt sheer at high temp. I ran ss 5w30 in my 5.0 for 8k with over 30 passes at the track. Sent a sample off to blackstone and they said it was perfect, could have even put another 4k on it.
Anyway i couldnt wait... About to put my car on a lift and see if my 12 has the cooler on it
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I switched to Amsoil signature 5w30 just a few weeks ago. I have noticed consistently lower oil temps by 10-15 degrees, even on 80* days, and I do not have an oil cooler. I will say that it takes much longer for my car to reach operating oil temp though.
Previously I was using Valvoline Synpower only because I get it for free. But I wasn't comfortable with it anymore.
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