Oil to water coolers are MUCH more thermally efficient than oil to air. I believe the ratio is something like 10 times more efficient, but don't quote me on that one.
I got the biggest "transmission" oil cooler I could get from Checker Auto (something like $80), mounted it to the front of my radiator, then I ran the lines from the filter to the cooler, then out the cooler and into the tranny cooler fittings at the bottom of the radiator, and the return oil is piped into the top of the exhaust side of the head. I have a large oil to air cooler (forced air pulled across it) and also oil to water. If for some reason the oil is overcooled (ie: winter months), the water in the radiator will warm it back up to operating temp. If the air cooling is not sufficient (ie: Summer in Phoenix), the radiator water will help cool it much more.
I kept the pressure valve on the oil filter adapter because if for some reason the oil pressure gets too low, getting oil to the engine is MUCH more important than cooling the oil and helps maintain pressure throughout the entire oiling system, as the turbo and piston oiling jets need lots of volume to maintain proper oil flow. 8)
Just my 2 cents. :wink:
I got the biggest "transmission" oil cooler I could get from Checker Auto (something like $80), mounted it to the front of my radiator, then I ran the lines from the filter to the cooler, then out the cooler and into the tranny cooler fittings at the bottom of the radiator, and the return oil is piped into the top of the exhaust side of the head. I have a large oil to air cooler (forced air pulled across it) and also oil to water. If for some reason the oil is overcooled (ie: winter months), the water in the radiator will warm it back up to operating temp. If the air cooling is not sufficient (ie: Summer in Phoenix), the radiator water will help cool it much more.
I kept the pressure valve on the oil filter adapter because if for some reason the oil pressure gets too low, getting oil to the engine is MUCH more important than cooling the oil and helps maintain pressure throughout the entire oiling system, as the turbo and piston oiling jets need lots of volume to maintain proper oil flow. 8)
Just my 2 cents. :wink: