In the old days, SAE 20 motor oil was used, later models use automatic Transmission Fluid, or trim fluid sold by the manufacturer. Try to determine what was previously used in your unit and refill with the same.
Get the air out first..
5 quarts
A supertech ST5 from Walmart.
ph5
PH8873
An oil pump Or do you mean the type?
centrifugal
Depends on the manufacture and the size of the pump. These pumps use a special oil so contact the manufacture for the exact amount and type oil.
30 Weight Non-detergent Oil
what type of gear pulley to use to take off oil pump on 1996 Mazda mellinia?
A Karcher pressure washer pump requires 15W40 non-detergent oil. It takes 4 ounces and doesn't need to be changed because the oil will last the for the lifetime of the pump.
th purpose of an oil pump is to PUMP...OIL