How much oil pressure does this mean i cant understand the numbers of this guage other forums talk abou 40 psi is normal but what the heck does this mean please help!!!!

 

I'm not sure what the units are on the metric (Non-U.S.) Jeeps are, but 40 psi is the equivalent of 3 on your gauge. The proper pressure will read between the first mark and 3rd mark.

The reading in the picture is normal oil pressure at idle. When the engine is under load it is normal to read around the 3rd mark.

 

^^^ Yep.
Your gauge is in bar values. 1 bar = 14.5 psi 3 bar = 43.5 5.4 bar = 78.3 psi