oil cooler?

[Apsogos]

jondee86 Wrote:If you are talking about the Toyota factory oil cooler with a return hose
into the oil pan, then not important.

The factory cooler is a by-pass type, and oil is only sent to the cooler
when the rpm's (and oil pressure) are high. At lower rpm's the spring-
loaded bypass valve is closed, and no oil is sent to the cooler. So for
normal around town driving the cooler is just extra weight.

Cheers... jondee86

i have replaced my oem oil cooler with a new better one (handmade) , i want to ask if you know at how many rpms the valve opens? thank you