What Oil should I use?

[kawasig]

Hello All

I have a 1987 Suzuki dual range 230 and a 96 bayou 220. I'm trying to figure what oil to use. I normally put Amzoil synthetic in most everything. But I understand there are concerns over the wet clutch. I've heard rotella 10w40 full synthetic,5w40 synthetic,10w30&40 non synthetic. I do live in Michigan, so temps cold and hot are encountered. It could be below zero or 90 degrees farenhight. I don't have manuals for them. Any help is greatly appreciated!

[Ajmboy]

I’ve always stuck with Valvoline ATV Oil. You can get it at Walmart. I’m in NY and it typically gets pretty cold in January. As long as it specific oil for ATVs you should be ok.  

[kawasig]

Thank You Ajmboy! I will check that out.