you got over 100k on a 4l60e? if so thats good but if you plan on doin the turbo in your sig...

 

just do the fluid and filter DO NOT FLUSH THE TRANSMISSION

 

agree 100% here, pan drop and filter change only, if you wanna have it flushed u have to keep up on it in pretty short intervals-every 25k or so from the time its new,otherwise youll push any trash around the tranny and cause it to fail.

 

I have to say this. If flushing the transmission causes any type of failure at all, then the transmission was about to fail anyways. The action of flushing the transmission can NOT IN ANY WAY make a transmission fail.

Now I am sure that everybody and their brother who've ever had this happen to them will post up and flame me. FLAME SUIT ON.

 

I'm with Roger, when done properly, a trans flush will evacuate the old broken down contaminated fluid with fresh new fluid that will allow your transmission to run cooler and longer. Now back in the day with the old Ford AOD's that got "morning sickness" and the varnish inside the trans held it together, that's a different story...

 

I prefer to do a fluid exchange, rather than a flush by disconnecting the lines at the radiator or cooler and run temporary hoses into a pair of buckets, one filled with fresh fluid. Doing it this way, all the fluid will be replaced in a normal fashion without any undue risk in a matter of seconds. Just run it until the color of the fluid coming out of the transmission looks exactly like what is going into it and your done once you've reconnected the lines. I will say that while the pressure is reasonably low at idle, you do want to tape or otherwise secure the lines into the buckets or you risk them coming out and sucking air or at the very least making a mess.

 

This is actually how I did my last trans service on my truck before the 60E took a dump, and yes, I did make a mess It rolled for 20k before going kablewie...

 

When doing this tranny filter and fluid change, what kind of filter are you putting in, about how many fresh quarts and whats a good tranny fluid you all have had goodluck with and like? Thanks

 

Im about to roll 100k soon also. Im just considering pulling the pan and doing a filter and a few qts of fluid. Not sure if its even worth it, but i may upgrade to a real pan with a drain plug on it so i can at least service it easier. I never thought my 60E would go to 100K even on my fairly stock truck, but here we are.

 

Yea i have a 118,000 on my 60e, probably just going to drop pan and change filter also