Oil Pressure Drop After Oil Cooler Install

[eXc]

Gday Guys,

I installed an oil cooler over the weekend. And I have lost a lot of pressure. I mean it is the stock gauge, so it's probably not that accurate, but still.

I used to run at about 3-4 normal driving and occasionally higher pressure when driving hard.Sat at around 2 when idling.

It currently now runs 2-4 normally, and sits at JUST off 0 when Ideling.

The wierd thing is first thing in the morning, it actually does run like it used to (around 4) and it continues to do that for the duration of my drive (2 mins or 1 hour) THEN, when I restart it, the pressure doesn't go above 3, maybe 4 tops. Seems wierd that it works fine until the engine is turned off, then back on?

How concerned should I be?

Cheers

Chris

[race_snooze]

add more oil to accomondate the extra capacity of the coolier, check levels from dip stick.

[eXc]

yeah it took about an extra litre. oil levels are at full on the dip stick.

anyone else have any ideas?

[Neil]

Need more info,,,I assume you are using a sandwich plate between the motor and oil filter. Did you install a remote oil filter as well.?

Neil.

[eXc]

yes.

19 row cooler + remote mount filter.

Hooked up, engine->filter->cooler->engine.

made it so the oil flow went into the outside of the filter, and leaves from the inside of the filter.

[ferni]

Not sure how extra oil helps oil pressure??

Anyways. I think its normal to loose a bit of pressure with an oil cooler, all those turns in the hoses, the hoses themselves and the remote filter (probbaly sitting up top of engine bay)... think of all the extra work the little oil pump has to do now

If you are not leaking any oil i guess theres not much you can do about it....

[Beer Baron]

the reason you get good pressure in the mornings is the cold oil. once you switch the car off for a while the heat soaks into the oil, when you start it again it's thinner.

[eXc]

pressure fixed.

The oil was flowing throught the cooler first, and it was going the wrong way through the filter. Fixed it up and its back to normal.

Although I did find that the hottest the oil got to on the cold side of the cooler was 30 degrees.

[AzzurrA]

hrm, thats probably a bit toooooo cold for the oil, i would think? anyone care to correct me?

[PlasticStan]

hrm, thats probably a bit toooooo cold for the oil, i would think? anyone care to correct me?

<{POST_SNAPBACK}>

Yeah you're right. Oil should be at least 80degC. You can get a thermostat that will only let oil through to the cooler when it reaches 80degC so that the oil isn't too cold.