I think you can use API grade SF or SF/CC but that's for an '85 i don't know whats changed
Yes. sm is better and newer than sf or sg.
SAE 10W-40, API SF or SG
10w-40 conventional api sf or sa
API grade refers to the classification of crude oil and other petroleum products based on their specific gravity, as measured by the American Petroleum Institute (API). The API gravity scale indicates how light or heavy a crude oil is: higher API gravity means lighter oil, while lower values indicate heavier oil. This classification helps in assessing the oil's quality, potential uses, and economic value in the market.
A 10w40 oil with an American Petroleum Institute or API rating of SF or SG.
SAE 10w-40 API SF or SG oil. I would recommend you use synthetic.
In winter I use 10w40 SF or greater, summer 10w40 or 20w50 SF or greater.
The recommended type of oil to use for a Kawasaki 610 Mule is API SF. Th610 Mule will hold approximately 1.5 quarts of oil.
_ API Certification Mark *2 _ API grade SL or SM, Energy Conserving *2 _ ILSAC grade GF-3 and GF-4 *2
Manual Recommended lubricants for Engine/Transmission are: Type: API grade SE or SF multigrade oil, Viscosity: 40-degrees F(5-degrees C) or above:20W40 or 10-degrees F(-10-degrees C) or below:10W30
Use API Certified SAE 5W-20 Engine Oil