Quote:
Originally Posted by travisjb
I'm guessing, but I would think that the lines and cooler would already be full of fluid, so that once the pumping starts the distance for oil to travel to cylinder heads is unchanged
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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).