Making sure you're not adding more then you car needs. When oil is leaking, either one you adding too much or 2) You need to replace your head casket seals.
If you are asking because of your valve cover leaking oil, there was a recall on that year valve cover gasket.
Valve cover gaskets?
on the valve cover
Gasket is leaking oil. Valve cover gasket is likely suspect.
it doesn't have an official pcv valve just the vent fittings which need to be cleaned out periodically.they are the elbows on the valve cover,clean the tubes out also.spray a little carb cleaner inside let sit and hose out
Pass side valve cover.
the PCV valve is located on the valve cover of a 1991 Regal Custom. It is plugged in and can be easily changed.
you will see oil all around the valve cover and running down the side of the block.
The PVC valve for a 1991 Skylark should be located on the top of the valve cover. It is a plug in type, twist and pull to remove.
The PCV valve plugs into the rocker arms cover or intake manifold.
typically ther're on the top of the valve cover or on the intake manifold.
its on the valve cover right behind the oil fill cap..
A 1991 Jeep Cherokee computer is what fits a 1991 Jeep Cherokee.
On the right side valve cover.
in the rocker arm cover
There is a big hose in the front valve cover it is at the end of that hose...
Its on the front of the valve cover the first hole behind the oil fill hole
It is very easy to access in the left hand valve cover near the oil fill opening. This is the valve cover closer to the radiator. If you pull it up, it will slide out.
changing the valve cover gasket will not fix an over heating problem u need to check out the cooling system. Radiator, water pump, hoses, belts
I have a 5.8L in my 1990 and it is located behind the intake on the passenger side. Right by the valve cover.
its in back valve cover at fire wall i removed the plenum from the intake manifold to get at it.
For the 305 (LO3), the PCV valve is located on the driver's side valve cover. It's held in place with a rubber grommet.
The transmission dipstick for the 1991 Chevrolet Caprice is located on the side of the transmission. It will be behind a valve cover.
it is on the inboard side of the front valve cover driverside end, you will need to replace the grommet also
Its on the passanger side valve cover under a clutter of little hoses near the firewall