Originally Posted By: bubbatime
Originally Posted By: ExMachina
In an engine that old, I'd recommend going to a 0w-30 or 5w-30, even though it was originally spec'ed for 5w-20.
In Arizona, Florida, Texas, sure. In Wisconsin with the winter approaching?
5w20 will be fine. Especially when we start getting down into 20 degrees and lower. Which in Wisconsin could be tomorrow lol