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15hp Tohatsu 15hp year 2000

Ron f

New member
Hello,

I have 2000 Tohatsu 15hp. Oil light comes on at startup. I give it some gas and it goes out. It only last 4-5 seconds. I just bought this boat and a 4 stroke is all new was to me. Does it hot and 1 time cold. I’m a worry wart😂
 
You did not mention model. Year is irrelevant. Make sure you are running 10w30 oil, and not a drop over full. It's normal for the LED to be on for a few seconds after starting.
 
Thank you for responding, the model is a MFS15B. As far as oil goes. Can any high-quality motor oil be used conventional or synthetic. Or do I need to use a marine oil. My closest Marine shop is 45 miles away. I’m a newbie to four stroke motors.

Thank you so much for responding
 
Bringing this to the top with a holy smoke!

Paul, why wouldn't we want to run synthetic oil in these high RPM 4-strokes?? At 6000 RPM I thought a conventional oil with sheer out.
 
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