Just got a 98 Honda 450 foreman and there is no manual. What weight of oil do you put in? can I use 20w50?

 

I use 10w 40 in mine.

 

Go to your Honda dealer and put Honda oil in it. Ask them and they will tell you.
I put nothing but honda parts and fluids in mine. They may tell you, you can use a different brand name......

 

Does the 450 have enough power to spin a big wheel kit?

 

10w40 will work. Just make sure on the back of the bottle that it does not say energy conserving in the little circle which means no friction modifiers.

You can pick up a case of Walmart 10w40 for ten bucks which has the correct information on the back of the bottle. Walmart oil is produced by Quaker State.

I mix my own oils for applications but the main thing is to change your oil and change it often.

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I have a 02 Foreman and I run Honda 20w 50w in the summer as it gets really hot here in Texas working on mile after mile of fences here on the ranch.