oil pressure

Reply Subscribe

Thread Tools

Search this Thread

Jan 9, 2007 | 10:57 AM

tundraathome

Thread Starter

Freshman User

Joined: Oct 2006

Posts: 36

Likes: 0

oil pressure

i have a 93 ranger with a 3 l engine. i have replaced the main and rod bearings, new oil pump and the pressure now sits at 55 cold and about20 when warm[mechanical guage] the warm psi seems to be on the low side as i woul think that a spread of about 20 psi between hot and cold should be about normal. sam

Jan 9, 2007 | 06:00 PM

MazdaRangerGuyInSTL

Elder User

Joined: Sep 2006

Posts: 871

Likes: 0

HOT oil pressure, at 2500 RPM should be 40-60psi.

That's the only oil pressure spec I can find.

Good luck

Jan 10, 2007 | 10:00 AM

tundraathome

Thread Starter

Freshman User

Joined: Oct 2006

Posts: 36

Likes: 0

that is about what i thought . are there any other items unique to this engine that i should be looking at. the engine was very clean inside when i took it apart sam

Jan 10, 2007 | 07:29 PM

MazdaRangerGuyInSTL

Elder User

Joined: Sep 2006

Posts: 871

Likes: 0

20PSI at idle should be fine, just as long as it's above 40 when you rev it up above 2500 rpm.

Jan 12, 2007 | 10:32 AM

pawpaw

Moderator

Joined: Jan 2004

Posts: 13,851

Likes: 111

From: SW Va

The 3.0L oil pressure of 40-60 psi @ 2500 rpm is all I've found specified also.

I think MazdaRangerGuy is about right.
My old Merc Zypher, with the 3.3L, using 10W-30, with the specified thermostat & fully warmed up at idle, indicates about 15-20 psi & about 50-60 psi off idle, on it's oil pressure gauge I installed, depending on the rpm, engine temp & oat.