1980 GS850L What wt. oil

[Anonymous]

Ready to change oil on newly aquired 1980 GS850. On the bike it recommends 10W 40 but I wondered if anyone had any suggestions on this older bike. Would 20W 50 be a better choice? Thanks for any input.

[saaz]

Depends a bit on the condition of the bike and the climate you ride in.

You cannot go wrong with a 20W-50, that is the minimum I have used for years, but the temperature around here only goes down to -5c or so at worst. If you plan shorter trips use in cold weather 10W-40 would be good.

[Anonymous]

I just switched to 20W50. The bike is running much better with it.

BRIAN
81 gs650g
84 v45 SABRE

[Bill + Karen]

I run 20-50w in ours, switched back to 10-40w in the 1100 just to use up what I had left. Shouldn't have bothered couldn't get it out of there fast enough. I like the 20-50w much better, less rattles and engine noise on my 65000 mile motor. Bill