Honda HP4 oil in 09 450?

3 replies to this topic
  • CRFracer23

Posted September 20, 2009 - 06:08 PM


Just recently got an 09 yz450 after riding honda's for 8 years. I always ran Honda HP4 oil in them. I picked up a few quarts of yamalube with the bike and am just about out of it. I have a few gallons of HP4 left, anybody have any experience with this oil in yamaha's since the tranny and motor oil arnt seperate? Thanks! :busted:

  • Butta

Posted September 20, 2009 - 06:27 PM


Years ago I ran HP4 in my street bike. Just ensure that it doesn't have friction modifiers in it and it's the proper weight for your bike. Avoid any oil that has "Energy Conserving" marked on it, as it will make your clutch slip. I would think anything Honda makes for bikes will be fine, but you bring up a good point about them separating the oils in the motor now. Follow the above advice and you'll be good.

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  • rickallen124

Posted September 20, 2009 - 07:13 PM


As long as it isn't the Honda oil with moly that is designed for the engine side on the honda's.

  • grayracer513

Posted September 20, 2009 - 07:17 PM


Check the label. If it says JASO MB, don't use it.

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