Oil pressure

[DumDum]

With this hot weather, I had the oil pressure down to 4psi on idle after a good run.
Car just been serviced, on 5w 40 oil. Anyone using other grades to help this hot idle?

[shep1001]

@850rpm I an getting 9-10psi at 75deg+ using 5w-40w mobil super 3000.

[blueg33]

Mine idles at 700 rpm with hot oil pressure of around 10 psi. If idle drops to 600 (it does occasionally) then oil goes to 8/9 psi and I give it a blip. I like to see psi in double figures.

[VARLEYHYD]

blueg33 said:

Mine idles at 700 rpm

That's too low- should be 850-900 for healthy oil supply

G

[KillerJim]

My (hot) idle is at 950, purposely set higher because it will drop by ~100rpm between services..

At hot (78c oil) I get about 16 to 18psi at 950rpm, never seen single figure PSI (and had the oil sensor replaced a year ago - both old/new gave same results)

[blueg33]

VARLEYHYD said:

That's too low- should be 850-900 for healthy oil supply

G

I had that feeling. Do I need to use a laptop to raise it?

Cheers

Nick

[dpd3047]

You need To put a decent multigrade semi synthetic at least a 15/50 better still millers 20/60 highly recommended.

[DumDum]

Idle was down to 600 rpm, so had that set up, now at 15-16 psi, much happier car!

[mindstar]

dpd3047 said:

You need To put a decent multigrade semi synthetic at least a 15/50 better still millers 20/60 highly recommended.

Not questioning your knowledge here, genuinely interested; but why then do most seem to swear by full synth. 0W40 - 5W40

[shep1001]

mindstar said:

Not questioning your knowledge here, genuinely interested; but why then do most seem to swear by full synth. 0W40 - 5W40

IIRC Power spec Semi Synthetic oil following their rebuilds. I go with what Jason put in when he services it 5w-40w fully Synthetic.

[DanCat]

DumDum,
Just out of interest how did you raise the hot idle?
Yourself or garage?

cheers