It depends on which engine it has and if it is 2 wheel or 4 wheel drive. Example, a 89 S10 4+4 with the 4.3 engine, you would find the engine oil filter under the hood, in the drivers side front corner of the engine compartment.
5 QTS. with new filter.
stp s5 oil filter
The Oil filter in under the motor of the truck..
R85372 oil filter fit
5w/filter
no!
1989 Chevy s10
85W90 Gear oil.
5 with filter
When you are under the truck, look on the driver side of the oil pan.
5 qts. with a new filter.
oil filter is inside engine compartment front left fender by the head light