Question by tony: Is it ok to put auto oil in a four stroke marine engine as long as the API ratings are met?
I have a Yamaha 150 four stroke and it’s oil change time. I’ve heard you don’t have to use marine grade oil and all oil is the same as long as the API ratings meet or exceed the manufacturers recommendations. Is it ok to use “car engine oil” in my four stroke engine?
Answer by Ӝ
Yes. Use a good quality oil, such as Castrol, etc.
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