oil

[Ryan Plaugher]

what is the best synthetic oil for my 400ex

[Ryan Plaugher]

bump

[rooster300ex]

Klotz is a high quality oil. I've never had any problem with bel-ray and good ol honda oil. Everybody is gonna have there own prefrence of oil.

[bradley300]

AMSOIL, Motul or Redline

[bwamos]

Aye, you're going to get a lot of answers here.

Amsoil (my preference), Klotz, BelRay, Royal Purple, Motul, Redline, etc.. are all great synthetics.

Honda oil is crap however. ;)

The main thing to look for is to make sure the one you use is safe for a wet-clutch application. Most automotive synthetics have added friction modifiers that will cause your clutch to slip.

[Ryan Plaugher]

i like royal purple and use it in all my cars and trucks but will it make my clutch slip.

[480ex]

thats y u need to get royal purpal cycle oil.

[Hybridman23]

amsoil best stuff out there. my cussins a dealer good prices.

[1shooter]

well whatever oil you use make sure its designed for a 4 stroke high performance engine.

I use Bel-rays thumper oil. Its a 50 wieght a bit heavy but good ole 400ex's are oil cooled so. It makes more sense to have a heavier oil.

You don't have to do alot of research just use common sense. a thinner oil will thin out much faster wear stuff out.

I just found a oil that i thought would work good for the machine.

Good and thick.

[1shooter]

I use Belray's thumper oil Its a 50w so its super thick.

400ex's are oil cooled so i thought it made more sense to use a heavy oil.

Use your own common sense and figure what you think will work best.

You gotta figure a heavier oil is better on a oil coiled machine.

Go with the simple logic and you will be cool.

The thumper oil is designed for high performance 4 stroke atv engines.

So i figured how can i go wrong.

superb! :D

regards, Abedmoterted2