Question about oil change

[nitekrawler]

Hello all,
Question. I change the kids trans oil on their 250r every 100 miles or so (dad has a guage on his quad). Daughter's is nice a red, like new. Son's on the other hand is dark (purple in color) always. Why? What can I do to clean it up?

TIA

[200xman]

The clutch may be starting to slip on your son's and it's burning up the oil. Either that or he just rides it a lot harder.

[nitekrawler]

Probably the clutch...I have it adjusted all the way