long time since oil change
04-27-2004, 07:23 PM
#1
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Location: hawaii
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Car: 87 firebird
Engine: 305 tbi
Transmission: 5spd
long time since oil change
its been a while since this car has had an oil change, probably about a year or so. the oil pressure idles at 45 and fluctuates to 60. would old/dirty oil cause high psi? also, a friend told me its real bad for a car to completely change the oil if it's been a long time.. is there any truth to this?
i think tomorrow i will get a full change with mobil1 and a new filter..
i think tomorrow i will get a full change with mobil1 and a new filter..
04-27-2004, 07:34 PM
#2
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Car: 91 RS
Engine: 305 Tbi (L03)
Transmission: 700r4
Sludge buildup can cause high pressure readings. I would get as much of that crap out of the motor as soon as possible.
04-27-2004, 08:28 PM
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Car: '88 IROC-Z
Engine: 305 tpi
Transmission: 700r4/OD
Why it's been that long since your oil was changed, I don't know but, I'd change it, run it a couple hundred miles, and change it again to get the sludge out.
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