[392cobra]

Originally Posted by twobjshelbys

My oil cooler keeps oil temp (in steady state driving) at the exact same temp as water, all the time, and rarely move both above 80*C. In fact, it takes a while for oil to climb to water.

Given this, I'm inclined to stay with the 10w30 synthetic for the forseeable future.

What to they say about you rarely getting your oil up to operating tempt ? 176 degrees F is too cool for your oil.

I'd suggest getting a thermostat or block some air flow across your oil cooler.