100 Series oil pressure

Nick,
pressure depends on a few different factors,
Oil viscosity 15w or 20w etc
How long the oils been in service
Oil temp
Oil filter type + new or old
Spring strength on the bypass/relief valve
Age of the engine and how its been maintained.
Clearences in the oil pump,
Accuracy of the oil pressure guage.
A healthy engine will probably have 4 to 8 bar when cold and settle to between 3 and 5 bar hot, if its got less than 2 bar youve got problems, all these at 2 to 3 thousand RPM.
Hope this helps
Seems its raining everywhere except brisbanes catchment areas, bugger.

Hey Nick

How are you coping with the heat after Tassie?

Nick,

If the motor is not running and the needle is at the bottom of the gauge, that is fine.
If the motor is at idle and the needle moves up when the revs go up than that is OK.

It is only a gauge and it will vary. I had a 80Series that the needle never got above 1/4 mark. That went on for 8 years.

If you are still concerned install a aftermarket gauge.

Wayne

For the 100 Series the Owner's Manual says that the pressure recorded on the guage should be:

When idling - between the lowest mark (at bottom of scale) and the three quarter mark on the scale; and

For mormal running - between the first quarter mark and the top mark (maximum on the scale).

The manual says (page 106): "If the needle should stay below the normal range, pull off thev road to a safe place and stop the engine immediately." There is also a separate warning notice to this effect.

EV700

Nick, does this help!MPG:8!

Nick

I had a fleet vehicle from work and going bush from Alice and low oil pressure showing on guage about 15 minutes north of Alice so thought I'd do the right thing and returned to Alice to swap vehicles. Fleet guy on the desk stated all these 100 series diesels vary and none have failed,,,yet,,, I don't know what you are worrying about!!!!!

I took another 100 series diesel and guage was where I expected it to be ie top 30% of guage range and I was more comfortble with this.

However the fleet guy is very experienced and if it is common it may just be cruiser idiosyncracy. To be sure hook another guage up and check the routine things mentioned previouslyby guzzi if there is any doubt.

Barry

Hi All,
More years ago than I care to remember, I asked an auto engineer a similar question.
His reply was basically "If the needle is more or less half way on the scale that's near enough. It is not where the needle runs that you should be concerned about, it is when the needle is not where it usually is, that's a real cause for concern"
Makes sense to me but then I'm a landrover owner!!

Cheers
Disco

It is a very well known fact that the oil pressure sensor on the 100s is faulty on some vehicles. I just had mine replaced under warranty. Was reading very low. See your dealer he will know all about it.