Quote:
Originally Posted by wstar
Good filters have an anti-drainback valve, so I guess this comes down to: does that sandwich plate route the oil as pump->filter->cooler->engine, or pump->cooler->filter->engine? If it's the latter, then the cooler will drain back into the oil pan and need to be refilled before you flow oil to the top again (unless you add another one-way valve to the system at the sending hose to the cooler).
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the only way the cooler will drain back into the oil pan is if was upside down and higher than the engine, and the drain spot back into the engine was higher than the level of the oil, don't worry the oil cooler wont drain.
I have an oil cooler twice the size of that one on my 350Z and no issues with oil distribution.