Transmission Fluid

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May 9, 2019 | 02:14 PM

#16

geekwithoutacause

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Quote:

Originally Posted by KenRebF-250

I checked with two separate Ford dealerships and they both were totally up front regarding the fact that I could use the Mercon transmission fluid that now supersedes the actual transfer case fluid without concern. They basically left it up to me. I asked both dealership parts men if there was a significant price variance and the difference was less than $2.00 per quart at both Ford dealers. The more costly of the two by $1.83 per quart was the Transfer Case Fluid. Since the TC has a 2 qt. capacity I went with the specific Ford TC fluid. If there are Ford dealerships that are charging $25.00+ a quart for the specific TC fluid they obviously are gouging and way out of line.

Be aware, MERCON LV... not just MERCON.
They also sell MERCON V which is for the 4r100 and can not be used in the transfer case.

Oh they are gouging.

May 9, 2019 | 02:30 PM

#17

kcducttaper

Tuned

Joined: Jun 2015

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Amsoil is solid stuff. I put some of their 'severe gear' lube in the font and rear diffs on my Trailblazer after watching a comparison on the youtubes.

I have a bottle of Valvoline tranny fluid ready to drop in whenever I get motivation, but you can't go wrong with Amsoil IMO. From everything I've read, it's top of the line stuff. Personally, I don't mind spending a bit extra on 'quality' fluids (which is not necessarily always motocraft) and changing them every couple years if it means not having a catastrophic explosion down below. Just match up the correct weight/type and you should be fine.

May 9, 2019 | 04:48 PM

#18

Qwazert

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Quote:

Originally Posted by KenRebF-250

However, I've looked everywhere I can think of and can't find any mileage parameters for TC drain and refill.

I just checked my OM and they recommend changing the TC fluid every 150,000 miles during "normal" use and 60,000 when towing. Personally...I would do it a LOT more often than that; Mercon LV isn't that expensive.

May 9, 2019 | 04:52 PM

#19

geekwithoutacause

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12 bucks in fluid and 10 minutes of work (ok maybe 15 minutes if you need to remove the transfer case shield). Well worth it to change it.

May 9, 2019 | 06:19 PM

#20

Randy7

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Joined: May 2019

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I am going to order a case of the LV fluid, will that be enough to to the transmission? I am gonna drain the fluid and change the filter. Or is 12 quarts not enough? I think the om says 18.5 or 16.7. Is that completely empty or what?

May 9, 2019 | 10:55 PM

#21

geekwithoutacause

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Quote:

Originally Posted by Randy7

yes, one case is enough. That amount you mention is all the fluid but with a drain and fill you will not get all fluid out.
Here is a great video on how to do it.

May 19, 2019 | 12:59 PM

#22

Randy7

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Thanks for all of the help!! I ordered a case of LV fluid and a new filter. I was going to put the truck up on my 2 post lift to do the fluid change and realized I did not have high enough extensions to not hit the running boards.So I ordered those and now need to take some time to do it. I have more questions but I will start new threads for those.

May 19, 2019 | 03:37 PM

#23

geekwithoutacause

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Quote:

Originally Posted by Randy7

I just did the transmission service (filter+fluid) today as well as the transfer case fluid.
I did it with the truck on the ground on its wheels. It's not that bad that way.