Depends on where you live and weather temperatures with how thick an oil you use. I live in Tennessee where it doesn't get that cold in the winter for very long, so I can get by with a 20-50 if I want to. I run 10w-30 year round in my Grand Caravan and have almost 200,000 miles on it and it still runs like a top. I may use 1/2 quart between 6,000 mile oil changes on the Castrol Hi-Mileage that I run in it.

 

PS: I live in the desert southwest. My Saturns, I dump in 5-30 or 10-30 and have used 10-40 when they didn't have the others on the shelf.

 

Just picked it up today and it does eat alittle oil, probly most do this with the miles , highway or not? so 10-30 would be fine for the arizona wheather?Its using 5-30 now I wana go synthetic. And who would I talk to about electrical interiror issues(door swithes-power windows not going all the way down ect.)???
Thx every one for the warm welcome glad to be part of the saturn family