i just bought a 2002 honda foreman es 450 4x4. I was wondering what kind of oil should i use, like what weight and brand? I live in Dallas texas so its not that cold here. Also what kind of differential lube should i use? Are these the only fluids you have to mess with? I don't have a owners manuel so thats why i'm asking this. Thanks in Advance.

 

Honda GN4 10W-40 in winter and 20W-50 in summer. Honda hypoid gear oil 80W-90 in the diffs. That is what the owners manual recommends for my Ranchers.

 

Amsoil or Belray makes very high quality Synthetic oils. I am running Belray full synthetic oil in my Kodiak, incredible oil. Very expensive however ($15.95 Canadian)

 

I personally like Valvoline's ATV oil. It has the SF/SG rating that Honda recommends and is also designed and blended for the wet clutches used in ATV's. I use the 10w40 all year. $2.00 a qt.

I use Valvoline SynPower 75-90 full synthetic gear oil in both differentials.

I also use Zerex Extreme Life engine coolant mixed with distilled water for the cooling system.

I also use only Honda oil filters and change the rubber o-rings, gaskets and the aluminum drain plug gaskets every oil change and clean the air filter when it gets dirty.

 

I only use honda oils. Always do and always will.