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1965 Honda CP77 — Ulsan Metro City, Rep. Korea
Restored with original parts — Owner: J. Doe

CB77 Oil

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Seanmichaelwood
honda305.com Member
Posts: 16
Joined: Sat Jul 23, 2011 4:42 pm
Location: Orange county

CB77 Oil

Post by Seanmichaelwood » Sat Jul 30, 2011 9:06 pm

I was told today by a guy at Mission Motorsports to run 20w 50 in my 66 CB77. I think that is too thick, anyone else have to add?
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teazer
honda305.com Member
Posts: 798
Joined: Mon Feb 08, 2010 10:32 pm
Location: Midwest US

Post by teazer » Sat Jul 30, 2011 11:57 pm

How did you figure that? it's 20Weight when cold and the equivalent to a 50WT thinned at 100C Not as thick as 50Wt when cold. Straight oils get pretty thin when hot.

I'd suggest using Honda HP4 without friction modifiers in 20W 50 for this hot summer too.
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