lgibson

Does everyone service their trans. @ 60k. Do I most likely have the 4R100. 01 f150 Harley before the supercharger, but the rarest.

zmadams

From what I can tell, on here most people service them every 30K unless they haven't been serviced at all, then they just leave it how it is. Apparently if you change the fluid at high mileage and it has never been done before the new fluid will kill the trans quick. Also according to Wikipedia (credible source I know) only the '02-'03 Harley F-150's had the 4R100. I'm guessing you have the 4R70W. I could be wrong though.

dj17

On a high mileage vehicle a simple change is fine. Its a complete flush that usually kills the transmission.

alsatropine

iTrader: (2)

I changed my fluid at 100000 and then again at 150000 then again at 190000. Havent had one issue yet... knock on wood. But that was just dropping the pan and filter.