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EX 80
07-31-2001, 06:58 PM
I have been using 10w 40 oil in my 400ex. i just wanted to know if i should keep using it or go to 20w 50. I race mx. thanks

400exRacerX
07-31-2001, 08:39 PM
i use 20w-50 hp honda oil, "in the gold bottle" and i race mx. i use 20w-50 in the summer and 10w-40 in the winter.

01ytrx400ex
08-01-2001, 05:56 AM
Dito

08-02-2001, 01:45 PM
Ditto #2

EX 80
08-02-2001, 07:16 PM
Another question i bought the gold bottle HP4 and it has moly, do they make with out moly?, some one told me moly is not good, or were they just full of it? I hope so :-) this stuff is expensive

400exRacerX
08-02-2001, 09:48 PM
you are 100% correct ex 80, moly is bad for your 400ex do to it being a dry sump motor, the moly only hurts your engine if the oil is used for a extensive amount of time, like i said i change my oil after every race. it does cost alot to change so often but i want my engine to last long. its usaully every race but sometimes every other. if you want to use a oil without moly if you are using the oil for a longer period of time i would go with the honda gn4 20w-50 and 10w-40 that has no moly in it and works great.

monkeyboy
09-24-2004, 02:47 PM
exxxon

PunkA$$
09-24-2004, 02:54 PM
I may be wrong but is'nt GN4 only available in 10w 40 weight?

cals400ex
09-24-2004, 07:00 PM
if your running an aftermarket cam and piston, run 20-50.