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All my local dealers are out of 10W-40 oil and all they have is 10W-30. I was wondering if this would be okay because in the Suzuki Manual it says that 10W-30 is only good up to 86 degrees F. I live in Kansas and it defintely gets hotter than this during boating season. If I use the 10w-30 will it hurt my engine if it runs in weather hotter than 86 degrees F??? Thanks.

i picked up a fishing boat with a suzki DF25 and dont know the yr 02501f-151385 if you can help me with that i would be greatfull ty and allso how many RPM should it run at wide open thank you so much happy boating