oil for my 400ex

[rubicon500kid]

i was told by the guy taht had it befor me to run Mobil 1  15W50
if not what hsould i run in it also where can i get it at thanks

[TRX450R_Racer]

DO NOT run any oil with moly, 99% of car oil has moly. The oil you mentioned has moly. It will make your clutch slip.

[rubicon500kid]

ohhhh ok ill buy the stuff with out moly

[rubicon500kid]

what oil should i run then ??

[Yamaha72]

Try AMSoil great stuff. go for a 10W30 for the winter and go up a little in the summer 10W40.

[svtbolt04]

Golden Spectro.

[cutngrs]

DO NOT run any oil with moly, 99% of car oil has moly. The oil you mentioned has moly. It will make your clutch slip.

this is not true                                         
moble one is not going to make your clucth slip   it is a great oil      i have used it in many high performance bike motors that i have built over the years   from 7 sec  drag bikes to  high 3 sec  300 foot drag banshees  and  never had  a clucth problem   

[TRX450R_Racer]

That oil is not recommended for a wet clutch application. Call the oil manufacturer they will confirm my information. I never said is wasn't good oil. I use it in the engine side of my 450R. I use Golden Spectro in the transmission side. Since my 450R has seperate oil for thr engine and the trans I can use it.

[rubicon500kid]

what should i use for my 400 then

[gery350]

i've always used reg. oil and never had a problem.
but then again, i have a stock bike. if i were running high performance then maybe mobil1. but at 5.00 a quart i dont think so.

[lil_Mrs._Honda1]

we use the amsoil in our 400 exs!

[klutchbuster400]

i've always used reg. oil and never had a problem.
but then again, i have a stock bike. if i were running high performance then maybe mobil1. but at 5.00 a quart i dont think so.

youre bike isnt stock, i think the old age is getting to you..............