I have only mowed 3 times with my new tractor this spring, unfortunately today I mowed about 2 acres with the parking brake on. The tranny got so hot the plug with the little cotter pin head sticking out started to drip transmission oil. Oil was all over the mid mount mower deck. The oil was very high up on the dipstick when I checked the level, I assume it expanded a lot from the heat.

What kind of damage could I have done besides shortening the life of the brake (pads?) The engine never overheated, the temp stayed out of the red on the guage. But I was wondering why the temperature was as high as it was, it was not that hot out today (80F)

I'm assuming the brake applied is what heated up the oil and not the pulling load, as I could not even tell the difference with the brake on...

sucks...