[Ryan]

hey all
im wondering what type of oil i should use in my 98 trx 300
i just started riding a week or two ago and i decided to change oil soon, even though the previous owner said he already changed it. i havent rode it much.
oh yea, he didnt give me a manual either so i dont know what type of oil to run
5w-30, 10w-30? 10w-40?
thanks :funnypolaris:

 

[Pain]

Any oil spec'd for wet clutches in ATV's and motorcycles. 10w-40, unless you live in a super cold climate, and then 5w-30 is what mine calls for and what most people use as far as I know, but frankly as long as you have oil in it then you're ahead of the game.

I use honda oil, but you don't have to.

 

[Ryan]

i can just use automobile engine oil right?

 

[Pain]

No, it has to be spec'd for wet clutches in ATV's. If you use auto oil the clutch can slip.

 

[Ryan]

ah i see, didnt know that, thanks

 

[Pain]

Look at the oil. If it looks clean, then just run it for a while. It will be fine.

You know, the color of honey, not chocolate.

 

[Helmut]

The recommended oil is Honda GN4 10W-40. Like Pain stated, most automotive oils have friction modifiers that will cause the clutch to slip.

Let me know if your ATV is 2wd or 4wd and I will post a link to an owner's manual that you can download.

 

[bobami]

The recommended oil is Honda GN4 10W-40. Like Pain stated, most automotive oils have friction modifiers that will cause the clutch to slip.

Let me know if your ATV is 2wd or 4wd and I will post a link to an owner's manual that you can download.

THANK GOD I read this post!!! I changed the oil in my previously abused 94 TRX300fw and my buddies mint 1986 TRX350 2 weeks ago and used Quaker state 5W-30 automotive oil. Didnt ride either one just ran them enough to warm up oil and check the levels. Last night I drained the automotive oil from both and replaced with the wet clutch motorcycle oil.

The oil from the mint 1986 came out as clean as a whistle just like honey. I did not replace the filter since I just put one in 2 weeks ago.

The oil from the 94 that I have no history on looked like driveway sealer it was so black. I only ran it for at most 30 minutes over last 2 weeks fiddling with carb adjustments etc. Even the new filter was black. I put another filter in it with the motorcyle oil. Should I flush this engine with anything to clean it out? or just keep changing the filter and oil often t clear out any dirt?
This machine runs real nice just plain old dirty inside I guess

 

[Pain]

You can put seafoam in the oil per the directions. Not sure what else to use to flush it with.

 

[Helmut]

I've used diesel to flush them out. Just drain the old oil out and pour diesel in and pick the front end and back end up and shake it around a little and drain the diesel back out. Let it drain for a long time, so all the diesel will drain out. Then put the new oil in it.

 

[mud99]

If you want to use full synthetic you can use the Rotella T6 It doesn't have the additives like conventional engine oil does and its safe for wet clutches.

 

[tlshnaekel]

this link might be of some interest. i thought it was pretty useful. Tim.

Wet clutch oils