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The mkiv Supra Owners Club

Oil pressure and temperature,how high??


stt

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After having a quick scoot through the archives Ive found that the soop normally runs around110 degrees c which is what mines on,But when you start it the pressure goes up to max which is around 100psi then as the journey increases it will drop to about 30ish psi when its at 110 degrees c,Does this sound right or am I gonna have to pay big money for something stupid?

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  • 2 weeks later...

Just bear in mind that oil viscosity is thicker when cold so pressure will be higher.

 

It's around 4 times thicker at 40degC than at 100degC, here's an example:

 

Typical 10w-40

 

Viscosity at 40degC = 85cst (centistokes)

Viscosity at 100degC = 14cst (centistokes)

 

Cheers

Simon

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