What's the deal with oil ratings?
I understand that the difference between 10W-30 and 10W-40 oils have something to do with viscosity, but what exactly do each of the numbers and letters mean? And which is ideal for which application?
John
__________________
1991 GT Vert- Black/Black/Black
Exhaust, Tremec, Tri-Ax, Centerforce Dual Friction, 3.73's, Rear Seat Delete
MM Road & Track Kit
PBR 5-Lug Brakes
Cobra R's w/ 255 Rubber
Rice Hater's Club #60
|