Does the oil pressure guage give you any clues about the oil level?

 

After the oil change the pressure would rise to about 100 psi on idle then slowly drop to about 30 psi after 15 minutes. Now the initial rise is still to 100 psia but drops almost immediately to 60 psia before hitting 30 psi after 15 minutes.

 

Does fully synthetic degrade to give this effect (oil is 2500 miles old)

There has been a lot of talk about oil pressure units and it has been generally found that the imports usually have a more irate pressure display and usually idle when warm even lower than a UK model.

 

I run Mobil Motorsport 0W/40 Oil and when I fire her up from cold, the pressure is about 100PSi. When warmed up, she sits at 19PSi.

 

Before my first Oil change, the pressure used to sit at 15PSi. I assume this is because I used to use Mobil 1 F/S 10W-50.

 

I think mine is about what they should be unless someone states otherwise.

 

As far as your question goes, I would think that the pressure would only drop if there was a major amount of oil missing.i.e. over 2 Ltrs. Cant say that I have had that happen to me and niether would I or anyone want to.

 

Maybe someone who has been unfortunate enough to have lost this amount of oil could comment.

 

Hope this helps!!!

The Stock Oil Pressure gauge is very inaccurate. Iain (MAC1) has a seporate oil pressure gauge on his car and he took a picture of the differnce in the readings. The stock one was about 50% lower than what the new one read. Also the oil pressure sender unit loses its accuracy after a few years. Change it and the stock gauge will be better. But its costs about £80 for a new sender unit and is not the thing you buy second hand.

 

Stuart

Any tips on reading the level? The dip stick is !"£$%^% useless

my local garage where ive had most of my work done on my car(rebuilds ect)said that if my oil pressure fell below say 25 psi then i should get it checked out(possible problems)does this sound right to you tech guys?

when i fucked my 1st engine the oil pressure fell to about 10 psi at idle and when i took it in to the garage they took 1 look and it cost me big time (£mega bucks )

what is the correct pressure settings for a standard zed???

jay

Right folks when your engine is hot The pressure should be about 1.5bar At 3000RPM

the pressure should be between 3.5bar and 4.5bar If it sits about 3BAR then that will be ok just make sure oil is clean

SPENCER

PS This has be checked with data

Spencers right but for psi guys multiply by about 14. The sender seems to last about 30000 miles then reads low during normal running but goes sky high when cold and can almost disappear when warm. Mine now sits around 15-20psi hot idle and 30-50 hot 3000rpm. On one recent long trip it read middle all day-55-60psi 3000rpm. They obviously wear out the variable resistor track inside but the high pressure bit not worn as only reached when cold works fine!

So no clues about oil level from the pressure guage. Open your filler plug when idling to reassure yourself that there is pressure. It should be flooding oil all over the cam lob visible just inside!

Willie