[danman]

Originally Posted by bugeye

My tractors are similar, but not “Super” sized

Removing the filter will allow some fluid to drain. Under the filter is a pipe plug with a square female recess. Use a ratchet or breaker bar inserted into the plug and remove. Be prepared for ~ 6 + quarts to drain

I have changed the hydrostatic fluid probably 3 times in 25 years and many more just filter changes. Last drain was this (2020) spring. Fluid appeared like new. I have never removed the rear cover to clean the differential

Thanks. is there a reliable substitute for Hytran. ? Tractor Supply and Napa are just down the road..... i found the filter cross ref