oil pressure
01-28-2002, 01:37 PM
#1
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Location: New Jersey
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oil pressure
I have a 76 euro with 37k on a complete rebuild.The owner's manual states 55 at 80c/170f degrees 5500 rpm.My car has been around 45 using a 10/40 non synth oil.I put in 10/40 before winter,but it has been very mild in NJ,50-60 degrees,just wondering if the oil grade it too light.Also this might be a stupid question all my gauges or euro,km,temp does this effect the oil pressure #s.What kind of oil press #s is everyone getting in thier cars?
Thanks,
Steve
Thanks,
Steve
01-28-2002, 02:20 PM
#2
Steve,
You should be following the oil weight recommended in your owners manual. I use Mobil 1 10W30 in my 911's during the winter, and Mobil 1 15W50 for the rest of the year. You should be OK with dino 10W40 during NJ winters.
The rule of thumb on oil pressure is 1 Bar (14.7 psi) for each 1000 rpm. My 2 911's run about 4 Bar at freeway cruising speed (3200-3400 rpm).
One of my 911's is also a Euro model with Euro guages. I sent the speedo to North Hollywood Speedo to have it calibrated and converted to MPH. Your Euro guages should have no effect on your oil pressures, unless you have a defective guage or sending unit.
Bruce
'84 Carrera Targa
'77 911 Targa (Euro)
You should be following the oil weight recommended in your owners manual. I use Mobil 1 10W30 in my 911's during the winter, and Mobil 1 15W50 for the rest of the year. You should be OK with dino 10W40 during NJ winters.
The rule of thumb on oil pressure is 1 Bar (14.7 psi) for each 1000 rpm. My 2 911's run about 4 Bar at freeway cruising speed (3200-3400 rpm).
One of my 911's is also a Euro model with Euro guages. I sent the speedo to North Hollywood Speedo to have it calibrated and converted to MPH. Your Euro guages should have no effect on your oil pressures, unless you have a defective guage or sending unit.
Bruce
'84 Carrera Targa
'77 911 Targa (Euro)
01-29-2002, 07:49 PM
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Hi,
I also get the thumb rule 1bar per 1000 rpm. I also get 8-10bar with cold oil, only when the oil has warmed up then the pressure relief valve will limit oil pressure to about 5.5 bar.
Years ago I had low oil pressure indication ( 4 bar instead of 5.5) and I traced the problem down to the pressure sensor. Check that!!
Andreas
I also get the thumb rule 1bar per 1000 rpm. I also get 8-10bar with cold oil, only when the oil has warmed up then the pressure relief valve will limit oil pressure to about 5.5 bar.
Years ago I had low oil pressure indication ( 4 bar instead of 5.5) and I traced the problem down to the pressure sensor. Check that!!
Andreas