It's up to you whether or not you want to take the chance. If it handles that well, you may just want to do what fullerav said and change the fluid out and keep an eye on it. Problem is, it only takes a short time to ruin the drums once the lining comes off the bands, and the drums are the expensive part. There's four bands and four drums.
Good luck
Don
Stuck in the seventies- not in the swamp.
(6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far