Oil Pressure Question
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Oil Pressure Question
I just got a 93 with 50000 miles on it. I noticed the oil pressure runs about 60 - 65 PSI when cold at an idle and about 10 - 20 after a couple hours @ 75 MPH. I don't know what oil has been used in the car in the past and I am going to renew all the fluids in the car. I am trying to figure out if I should go to a 20/50 to raise the PSI at warm idle or stick with the recommended 10/30. The car runs 30 - 40 PSI @ 3k going down the road. I don't know if this is normal oil pressure with the turbo's or not. the car runs strong and passes no smoke, just lower than I would expect for idle pressure.
My normal breathing 82 12A runs about 30 PSI at idle.
Also what are people running for tire pressures on the stock wheels and tire sizes ?
My normal breathing 82 12A runs about 30 PSI at idle.
Also what are people running for tire pressures on the stock wheels and tire sizes ?
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With 20W50, my oil pressure was 30 at warm idle and was about 120 at WOT. Typical highway cruising was around 60 or so. With 10W30 in the car right now, I'm seeing slightly lower, but not much. If you're readings aren't similar, you might want to clean the sending unit just in case. The unit is located below the oil filter, looks like a plug coming out of the driver's side.
I still have stock wheels and tires sizes (most don't any more) and I run 30-32 psi.
I still have stock wheels and tires sizes (most don't any more) and I run 30-32 psi.
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Re: Oil Pressure Question
Originally posted by toddah
I just got a 93 with 50000 miles on it. I noticed the oil pressure runs about 60 - 65 PSI when cold at an idle and about 10 - 20 after a couple hours @ 75 MPH. I don't know what oil has been used in the car in the past and I am going to renew all the fluids in the car. I am trying to figure out if I should go to a 20/50 to raise the PSI at warm idle or stick with the recommended 10/30. The car runs 30 - 40 PSI @ 3k going down the road. I don't know if this is normal oil pressure with the turbo's or not. the car runs strong and passes no smoke, just lower than I would expect for idle pressure.
My normal breathing 82 12A runs about 30 PSI at idle.
Also what are people running for tire pressures on the stock wheels and tire sizes ?
I just got a 93 with 50000 miles on it. I noticed the oil pressure runs about 60 - 65 PSI when cold at an idle and about 10 - 20 after a couple hours @ 75 MPH. I don't know what oil has been used in the car in the past and I am going to renew all the fluids in the car. I am trying to figure out if I should go to a 20/50 to raise the PSI at warm idle or stick with the recommended 10/30. The car runs 30 - 40 PSI @ 3k going down the road. I don't know if this is normal oil pressure with the turbo's or not. the car runs strong and passes no smoke, just lower than I would expect for idle pressure.
My normal breathing 82 12A runs about 30 PSI at idle.
Also what are people running for tire pressures on the stock wheels and tire sizes ?
#4
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the oil pressure sender units are junk! they never ever read right. also if it is a good unit (very unlikley) then you have a big problem!! just my thought
p.s. try cleaning off the connector on the sender w/sandpaper and brake clean see if that helps
p.s. try cleaning off the connector on the sender w/sandpaper and brake clean see if that helps
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Use a real oil pressure gauge if you are worried. The pressure transducer that is used in our rx-7's really sucks and the pressure that you are reading on the gauge in the car is most likely wrong. Mine fluctuates like hell. I tested the pressure with a mechanical gauge and it was fine. The oil pump is one of the strongest parts or our engines. Good luck
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SO are the people running syntech or Mobile 1 getting more than 1500 between changes or is there enough residue buildup to warrant the oil swap. This will be the first fluid chsnge since I bought the car last saturday and I want to change oil types once so I am trying to find out what others have had success with over some time. I know EVERYONE has an opinion on oils but this is the first time I ever could see the advantage of synthetics with the resistance to heat and resulting breakdown. We run Redline in the racecars I work on but I can't afford to run that in a street car.
#7
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Originally posted by toddah
SO are the people running syntech or Mobile 1 getting more than 1500 between changes or is there enough residue buildup to warrant the oil swap. This will be the first fluid chsnge since I bought the car last saturday and I want to change oil types once so I am trying to find out what others have had success with over some time. I know EVERYONE has an opinion on oils but this is the first time I ever could see the advantage of synthetics with the resistance to heat and resulting breakdown. We run Redline in the racecars I work on but I can't afford to run that in a street car.
SO are the people running syntech or Mobile 1 getting more than 1500 between changes or is there enough residue buildup to warrant the oil swap. This will be the first fluid chsnge since I bought the car last saturday and I want to change oil types once so I am trying to find out what others have had success with over some time. I know EVERYONE has an opinion on oils but this is the first time I ever could see the advantage of synthetics with the resistance to heat and resulting breakdown. We run Redline in the racecars I work on but I can't afford to run that in a street car.
From that day onward I switched to Mobil 1, have not used a better oil. I leave mine in my car for 3000 miles, then drain it out of the rx7 and put it in my second car and use it for another 6000 miles
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