Re: Uh Oh! Water in oil.

Posted by Jim L. in OR On 2012/9/13 10:17:52

5w is too thin for these engines. The FSM and Owner's Manual specifies 20wt. The '56 Owner's Manual specifies 10-30wt. as multi-weight oil came in about that time. I've heard that worn engines will actually do better with 30wt. I'm currently running 10-30 in my '55 as well as my '51 with no problems/noise. Don't make yourself crazy trying to find 20wt. I haven't been able to find it anywhere.