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Will this oil work? please respond fast!
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Posted by: whiteflash

i was wondering if Castrol GTX SAE 10w-30 will work in my 400ex?thanks

Posted by: whiteflash

in the owners manual it says not to use energy conserving. the castrol GTX is, but does it really matter?

Posted by: ethanp87

it wont hurt anything any oil is better than none. they wont you to by the $4 honda oil.

Posted by: JForestZ34

You can't use oil with friction modifiers in it. It will cause your clutch to not work properly. At least that's what happened whe I used the wrong oil.

James

Posted by: yfz450rider29

spend the extra couple of dollars, and keep your machine running right. If you do use a car oil dont use the friction modifier.

Posted by: whiteflash

i decided not to use the castrol and went down to the local yamaha dealer and got some atv oil.

Posted by: Trevor

Good choice thats what i would do!

Posted by: 400exrider707

you can use automotive oil just dont use synthetic automotive. You can use synthetic atv oil because it is designed for wet clutch use. Once you get something just stick with it. Switching back and forth between synthetic and non synthetic is what causes gumming.