Originally Posted by Andy Moore
Oh, thats okay then.
Optimax outboards don't use much oil. Why risk knackering your outboard because you put in the non-recommended oil? Doesn't make sense to me.
Who says it's not a recommended oil? Mercury don't!!! They say you can use a TCW3 oil. They recommend 2 of their own oils - the premium plus and the optimax. The Rock oil falls somewhere between the 2.
"Yes. OptiMax oil can be mixed with the Mercury Premium Plus oil that you have been running in your OptiMax." Quote from Mercury!!!
I suppose if you have a Toyota you only but their oil? Or a BMW you only buy BMW oil?
Merucry etc make a fortune out of people who think they can only buy the own brand oil. Remember Mercury do NOT refine their own oils!!!