Reply To: Oil mix

[Don]

The amazing thing about those old 5.5s is that they don’t smoke much when properly tuned, even at the 16:1 oil mix ratio. Sure, they will smoke when you first start them, just like most other two strokes. I would not mix at lighter ratios, regardless of the improvements found in today’s TCW3 outboard oils. Like everyone says, this engine has plain rod bearings, that love to fail due to lack of enough oil or water intrustion….