I have a '77 930 and it sat for a while over the summer ( no a/c). When I started it up this fall the oil pressure appeared to show lower on the than I remember. Indy shop replaced sending unit but and put on a manual gauge which showed "normal" pressures. At about 2500 rpm I am showing a little over 2 bar on the gauge. Seems like it should be higher. What pressures are you seeing at the gauge? Oil level is good. Thanks. Ted

 

Ted, what oil type/brand/viscosity was in your 930 when you observed these lower indicated pressures a few months ago?

And, what are these "normal" pressures your shop speaks of? Cold start? Idle? Warm? What values did they report?

My typical OP indications running Mobil 1 15W-50 year-round:
- cold start/idle: 5 bar
- warm idle: 2 bar [slightly less with extreme, >90F/90%, ambient temp/hum in FL]
- under load: 4+ bar ~3500 rpm, 3+ bar ~2500 rpm

 

Thanks. We are running cast roll 20:50.

 

That's pretty close to what mine does with 20/50 dino squeezin's Valvoline VR1

 

Same here....... 20/50 VR1