Yesterday, I changed the oil in both of my outboards.. The Honda 50 HP uses 5/30 Oil... and the Tohatsu uses 10/30.. Without thinking I put 5/30 in both motors.. Before I drain the 5/30 from the Tohatsu 5 hp and replace it with 10/30, is it necessary.. will the 5/30 work OK in the Tohatsu 5HP or should I change it?
