I own a Mercury Optimax 90HP and have been using Mercury Premium Plus oil (Synthetic Blend) since the break in period and I wonder if I could change to the Mercury Premium oil TC-W3 also recommended by the manufacturer under the warranty period.
Is it possible to mix both oils in the reservoir...
I just purchased a brand new Mercury 90HP Optimax 2-Strokes engine and started using Mercury synthetic oil since the first day, however due to the difficulties in obtaining this oil in south america, I wonder if I could switch to Mineral oil and what would be the procedure for doing it (Could we...