Try some 10w40.
It takes 5w30. Use synthetic blend.
There are several causes of oil leaks in a 1998 Buick Skylark. It could be a gasket, a bad seal, or even a drain plug.
I would go with 10w40.
4.5 quarts for the V6.
is there a special tool needed to remove the oil filter on 1990 buick skylark 4 cylinder front wheel drive?
The low side AC port on a 1994 Buick Skylark is on the passenger side of the engine compartment. It is near the front of the oil pan.
That is an indication that head gasket is leaking. yes!
4.5 quarts
15mm.
5w30 Your brand. Most are all the same
If it's the V-6, it's 4.5 quarts.