I wasnt saying my words right then. I was calling the tranny oil just the oil we put in the engine to differ from the engine oil. we always used the right kind i just dont remember what it was now because its been gone for a while. So I have to get a oil meant for wet clutches? are 10w-30 and 10w-40 meant for wet clutches or is there a brand meant for wet clutches? It takes 2.3 qt's right?

 

You obviously don't have an owner's manual....right???? Get one. It has an oil viscosity chart and will tell you how and where to drain the oil (both the tank and the trans), and how much to fill it with etc........

Read the bottles before you buy........JASO MA means it is certified for a wet clutch. API SG means it is ok for an integrated engine/transmission. It needs to say both. Tell us what brands are available at your dealer! Being air cooled, the 400EX can run hot sometimes, so this engine can benefit from a synthetic or semi-synthetic. If you can't figure what else to run, I would suggest Maxima Synth Blend or Honda HP4 (without moly) as the minimum, or better yet Maxima Extra or Klotz MX4 if you are willing to spend more money. If you are really working on the cheap, then Maxima Premium or Honda GN4...but only as a last resort.

The 10W30 and 10W40 etc. is the WEIGHT or thickness of the oil (but by itself has nothing to do with the clutch). Lighter oils are used in colder weather, and heavier for hotter weather. I live in the desert southwest where the summers are very hot and winters are mild, so I run 15W50 in summer and 10W40 in winter. If I lived in the frozen north, I would run 10W40 in summer and 5W30 in winter.

 

I know how to drain it and everything i was just wondering if the oils were for wet clutches and what not. thanks for the help guys i got it now =)