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Agree, I would be pretty hesitant to use a 50 in a modern motor unless you were fully informed.
you would want to see the full viscosity chart (not just the standard SAE numbers that are measured at a fixed temperature) so you knew what you were actually dealing with. Any company with a motorsports division should be able to provide that, they may only publish 100dC (SAE hot figure)but they have data to 150dC minimum as part of the test
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Easiest way to reduce engine temps would be to install a lower temp thermostat. As above though, running the engine below recommended operating temp isn't ideal.
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Thanks, I think I titled the thread wrong, it is not the engine temp, it is the oil temp I was looking to curb but from what I have read 120 degree for full synthetic oil is not an issue
