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Catharpin

Fluids for my Yamaha Big Bear ATV

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Hi,

I have a 2001 big bear 400 4x4 and was wondering what kinds of fluids I need to use. The guy I bought it from said it had all synthetic so I would like to stick with that.

For the engine oil can I just used mobil 1 or similar synthetic?

What about the differentials?

Thanks!

-Brian

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Yours has the Wet brake in the rear. You have to out wet brake gear oil it. If you have put regular DO NOT RIDE IT! You can get it at the Yamaha dealer I think it's called friction modified....just ask them. Also any Kawasaki or Suzuki dealer has it as well. YOU can get 80w-90 gear oil for the front at auto zone.

That's just for the rear, your motor oil can be synthetic, lighter oil for summer, heavier for winter.

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Is that a semi-auto tranny? Make sure you don't need oil with additives that Mobil1 may not have. I would double check with the dealer.

Check out this link about using Mobil1 synthetic in your atv:

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Agreed, go to the dealer and just ask them, what you need just to be sure. They will have every thing you need there too. I always use synthetic oils in all my machines.

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Agreed, go to the dealer and just ask them, what you need just to be sure. They will have every thing you need there too. I always use synthetic oils in all my machines.

DD, what type of synthetic oil do you use? Do you get it at the atv dealer, online or auto parts store?

I've always used Valvoline ATV 4 stroke oil (not synthetic though).

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I've seen some dealers carry:

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5w30.jpg0w30s.jpg0w40s.jpg

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