I bought my 1988 944 Turbo and it was using a lot of oil--about 1 liter per 500 miles. I changed the oil and put in a recommended Valvoline race oil (VR1) 20w50. It almost completely stopped using excessive oil--only about 1 liter every 1000 miles or more. This is factory spec (1-1.5 liters every 1000 miles is normal usage).
Apparently, these older motors love the heavier stuff. And the race oil has this chemical that's good for the seals (not sold in "off-the-shelf" reg oil).
I'm guessing the previous owner was running some modern, light oil like 5w30 synthetic.
Good luck, Dan
6.3 quarts, but don't stress over the .3 - call it six quarts even.
5 quarts without a filter, 5 1/2 with.
I use Mobil 1 10w30 works well with good quality filter.
the oil drain plug is located at the bottom of the sump under the engine. If memory serves you will need a hex bit to remove it.
6 quarts U.S. Dash warning indicator will light up with 5 quarts.
It is located just below where your oil filter and just above where you power steering pump are mounted in the engine compartment.
911 3.2 1988
spark plugs and wires, oil and oil filter, air filter, check rotor and points in distributor, check belts, just basic maintenance.
Use 20w50. Recommend Valvoline VR1--it's got a chemical that is good for the old seals. A lot of the "race" oils have the same. Dan
Porsche recommends the use of Mobil 1 synthetic 0-40 weight.
low oil pressure can be caused by a blocked or part blocked gause at the bottom of the oil pump, the oil pump itself or a faulty oil pressure sensor unit. Try replacing the oil pressure sensor first as this was the problem with my one.
Remove the old filter and make sure you remove the old gasket, there should only be 1 gasket.