How to change F & R Differential fluids

[HUMMERICH23]

So is it a good idea to do Transmission as well at same time if you?re doing Differentials and T-Case? I am in that position where with 38,000 miles i want to get Fluids switched out to Schaeffer's in my TC and Diffs but was considering doing tranny too. I know the Dealer wants 550 for Diffs, TC, Tranny, but I would only do it if they let me use the fluids i want like Schaeffer. I am wondering if i am better off doing TC/Diffs myself and having a tranny shop do the flush? Is it best to flush or should i just drain out like the 5 quarts and just replace?

[Hellz]

im not going to say it is or isnt a good idea...

the problem is how good of a job you want done?

you can drop the pan, and change the filter, but you are only going to drain about 5 quarts out of the pan. the rest will be in the torque converter, and cooling lines.. thats another 5 to 6 quarts.

im sure if you bring them plenty of the ATF you want, they will put it in for you. you will prolly need to bring enough to flush the system out tho.

so maybe 15 quarts or so......

[Hummerguy32]

Originally Posted by HUMMERICH23

So is it a good idea to do Transmission as well at same time if you?re doing Differentials and T-Case? I am in that position where with 38,000 miles i want to get Fluids switched out to Schaeffer's in my TC and Diffs but was considering doing tranny too. I know the Dealer wants 550 for Diffs, TC, Tranny, but I would only do it if they let me use the fluids i want like Schaeffer. I am wondering if i am better off doing TC/Diffs myself and having a tranny shop do the flush? Is it best to flush or should i just drain out like the 5 quarts and just replace?

Thank you again for all the suggestions. The diff's look like no problem w/ my work ethic in the construction industry so i can accomplish though i understand what some may think the dealership should do.

FYI: I did however have the dealership do the tranny flush. I do not have one of those flush machines to really suck all of it out of that area.

[HUMMERICH23]

Do you recall what they charged for just doing Tranny Flush?

[Hummerguy32]

Originally Posted by HUMMERICH23

Do you recall what they charged for just doing Tranny Flush?

$124.95 plus tax

State of Pennsylvania

[Hellz]

is that just for the flush, or did they drop the pan and replace the filter too?

[Hummerguy32]

Originally Posted by Hellz

is that just for the flush, or did they drop the pan and replace the filter too?

good question ... not sure I think just the flush.