[Targalid]

Bo, since you have the cooler, why not try running a garden hose through it to see how much it flows. I am curious to hear the results of this experiment. You can look up the flow rate of the oil pump at RPM and then compare the outflow from a hose through the cooler into a bucket to get an idea of the volume it will pass in a given time. House water runs 60 to 100 psi (when fully on) and you can turn the flow up or down. The oil does not begin to flow through the thermostat to the aux cooler until 186F, at which point it is flowing at lower pressure than at startup. Point is, the water would be a good approximation. As for oil pressure, I can watch my pressure relief valve (the one on the engine) when the engine is cold. At not much over 3K RPM, with cold oil, the pressure relief valve trips at about 95 psi, dropping down to about 60 with valve open. It does this with every shift until oil temp gets warmer. Once warm, the oil never sees pressures much over 60 psi with my sedate driving style.