Synthetic Oils for the 400ex????

[400exBro]

Does anyone run Amsoil 4-stroke synthetic moto oil??? I heard that they burn the clutch faster than normal oil is this ture???
I am looking at high preformance ams oil for the 400
thanks
lata
400exBro

[powerslider]

I run it in a 400ex, no problems so far. If you use the correct type of Amsoil it shouldn't be a problem. I'm using the 10/40 Motorcycle Engine Oil. No friction modifiers in this oil.

I was told not to run synthetic oil in the 400 because it causes the clutch to start slipping because the cluch is bathed in the same synthetic oil. they said it would be ok for a while but it would eventually ruin the clutch

Has anybody seen or used that amsoil 100:1 for 2 strokes ??? I don't think I could make myself put only 1 part oil ????

i run mamima super m at 50:1 with no prob.

[400exBro]

Originally posted by powerslider
I run it in a 400ex, no problems so far. If you use the correct type of Amsoil it shouldn't be a problem. I'm using the 10/40 Motorcycle Engine Oil. No friction modifiers in this oil.

how long have you been running it!! i do a lot of mx and trails where i need the clutch to stay together not to slip and i ride it hard throught the trails?????
lata
400exBro

[powerslider]

Go to their website and look for your self if you need more info. It is wet-clutch compatable, made for motorcycles, no friction modifiers like in automotive oils. I use it with no problems, my friend uses it in his moded Banshee and CR250. It works great.

As far as the two stroke oil, use the 2000 series at 50:1 ratio. Do some research and see for yourself, it's good oil.

I run the amsoil 20-50 v twin in my 2000 400 ex with zero problems.
If you go to there web site you can get info on the different characteristics and see how there oil out performs mobil 1.

There are so many good synthetics out there now, I'm not sure you and I could tell or see the difference if we tried them all.

The main thing is they way out perform petroleum oils.
007

[400exBro]

Thanks a lot guys and gals i look in to that !! i have a pamphlet hear because my dad uses heavy duty diesel engine oil for the unimog(benz truck)and i saw the 0w-40 4-stroke engine oil and thought about using it but my nieghbour has an XR 400 and saws that if you use synthitics you'll burn throught the clutch i decide before i buy i'll ask on the good old trustfull board and once again you guys came through for me thanks alot
lata
400exbro

[4punksdad]

I have had bad luck with full synthetic oils in the past. I run castrol SEMI-synthetic motorcycle oil.

[400exBro]

Originally posted by 3punksdad
I have had bad luck with full synthetic oils in the past. I run castrol SEMI-synthetic motorcycle oil.

Did it burn throught the clutch??? on what amchine??
I have heard that some sytnetics are bad for light clucths and you really have to be carefull of what kind you choice
lata
400exBro

[4punksdad]

no......but the clutch was slipping like crazy.

My clutch doesn't slip and I run Castrol Syntec oil. I mean its a hell of alot better than Honda junk or any dino-oil.

The reason you dont want to use synthetic oils in some dirt bike applications is they use a chome plated cylinder wall and the syn oils slips right off the wall after shutdown and cold starts there is no lubrication.
007