mooseknuckles
Cadet
- Joined
- Aug 15, 2008
- Messages
- 8
Was going to do the first oil change in my 20hp 4 stroke as well as the leg oil. Ill be using amsoil 75-90 syn in the leg, but I have read not to use synthetic for the crankcase. Is this true?
I have used amsoil previously in my yammy 9.9 without any probs. Should I go with a thinner weight than 10w30? I live in Calgary and the motor will likely never be used in temps above 85 degrees. Most temps will be in the 60-80 degree range.
Thx very much
I have used amsoil previously in my yammy 9.9 without any probs. Should I go with a thinner weight than 10w30? I live in Calgary and the motor will likely never be used in temps above 85 degrees. Most temps will be in the 60-80 degree range.
Thx very much