jkrauss

I have a 1998.5 dodge diesel at 2000 rpm what should my oil presure be, I use 15w40 oil

dozer12216

Minimum of 30 psi.

Zeus1987

with my truck i will never see under 40 psi cruising at 60 id say it is around 50-60 psi.

jkrauss

thanks my oil preasure is at 70 psi at 70 mph and 2000 rpm i was wondering if this was high and what would cause high oil preasure (new used truck to me)

dozer12216

Is this from a real gauge or dash gauge? Dash gauges and sending unit are subject to lots of varations.
Seventy is sort of high IMO. Would rather have 40 PSI or so. Less HP to maintain. On the other hand seventy is not bad. It just increases the oil churning around in the crankcase.

jkrauss

yes its a dash gage. any idea's on a better set of gauges ,like to have one for fuel presure too.

Diesel Doc

98.5 ran a higher oil pressure than newer engines for some reason. The guages are even different in the dash.

RowJ

And Dodge changed sensors in 02....... more sensitive. Not just ok...too high.... too low!

Find someone with a real gauge ...added on... and you will hear about a lot higher pressures than the gauge shows. The member I talked to (an 01) said idle is around 60 psi and it cruises around 70-80 psi.

RJ