Oil.....?
It seems the great oil debate of a year or so ago just never goes away. Someone is always asking about oil.........:rofl:
That's o.k., I like talking about it. And as most have noticed, I can fill up a page with words.
I think DCKD has a good point. Once you choose an oil, you should stick with it. Is it the same oil as the one you want to change to? Well, you have to ask a couple questions. First, it has to be within the minimum requirements of the API service classification and it's got to be the right viscosity. The biggest reason why people should stick with one oil is "Additives". The additives change a little from company to company. Most additives are detergents that keep oil deposits down and some even use PTFE to prolong bearing life.
If your PWC or boat uses the Rotax 1503 supercharged 4-TEC, you can use which ever brand you like (a major brand like Castrol or Vavoline, I'd hope) as long as it's a 4 stroke, 10 W 40 viscosity and an API classification of SG, SH or SJ. All motor oils put the API classification on the bottle/label so it should be easy to see. The most important thing though, once you switch, stick with it. Changing oils constantly will decrease the longevity of your bearings.
Remember, the SC and SCIC models use regular mineral oil.:cheers: