Oil Cooler and Oil Return

Dariusz · Jun 3, 2019

I see that most of the Oil Coolers people have are in a position that is much higher than the engine, so the oil must rise and then lower.

What happens when the engine shuts down (the oil pump stops working)? All that oil goes down? There is no possibility that the oil overflows the filling cap? How do you know if the oil is level (when going down it will show more than normal)? Or the coolers have a sort of checking valve that avoid all of this happens?

Thanks for the answers, regards

m in sc · Jun 3, 2019

if the fittings are on top of the cooler it wont drain the cooler down. the amount in the lines will be minuscule.

Dariusz · Jun 4, 2019

Make a lot of sense, I don't thing about that. Whit that in mind, a check valve is not needed.

solidjohnny · Jun 3, 2019

If the oil cooler ports are facing down....does the oil pump flow enough to flush out the air sitting at the top?

mikochu · Jun 4, 2019

Wait...so what's the recommendation? Ports on the top or on the bottom?

m in sc · Jun 4, 2019

top. always better.

Dariusz · Jun 4, 2019

Thinking a little more, what happens to the old oil in the oil cooler at the moment of a oil change? As the old oil don't drain to the carter then remains in the cooler and mix with the fresh one. What you people do in general in the oil change? Or is not important?

m in sc · Jun 4, 2019

i never worried about it. doesnt hold that much.

nd4spdbh · Jun 7, 2019

couple of oz of old oil aint gonna cause a problem. always have oil cooler ports at the top or fill at bottom drain at top so the full oil cooler is used.

Oil Cooler and Oil Return

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