Oil Pressure too high?

[Steve195]

While out on the laketoday, I thought the oil pressure gauge was showing high readings. It was at about 40 at idle/no wake speed, which is pretty normal, but when I got up on plane and was cruising at around 3000-3500 RPM the gauge jumped up to around 65-70. That seemed higher than it normally is. So is that too high, or am I just not remembering correctly? It's a 2008 Merc 5.0L TKS. If it is high, what could be causing the sudden jump?

 

[tony357]

that is tad higher than normal service manual has 25 to 70 psi at 2500 rpm.. I would not worry about it unles it starts getting higher try new fuel filter could be restricted or bypass is not working correctly..

 

[aerobat77]

not sure if a new fuel filter will affect oil pressure ;-)

depending of what oil you have your pressures are correct for a (nearly) cold engine. whith hot engine ( oil fully warm ) it seems a little high.

 

[JimmyDubai]

A few months ago my issue was quite the opposite.... 40 PSI at idle and 5 PSI at high RPM. Turned out to be a bad electrical connection in the pressure sensor... Have a look at it, maybe the issue is there.