[Tijoe]

When you had your TrueTrac installed were you told that it would void your warranty? We would like one installed on our 2019 T350 but the differential shop we spoke with said they wouldn't do it because it would void the warranty.

My understanding is that any aftermarket part/s installed on your vehicle that is/are not OEM part/s will not be covered under your factory warrenty. If the dealer can prove that the replacement parts you install cause other parts on the vehicle to fail, then everything associated with the faillure will not be covered by the warrently.

It is a very low probability that a LSD differential will cause any other part failures on the van, (unless you are doing something abusive to the van outside its operational design envelope.) Since Ford offers their clucth plate version of LSD as an option, installing a Truetrac is a more durable and robust solution than the OEM LSD.

Installing a "Locker" or "E-Locker" has a higher probability of stressing parts on the van then a LSD. Primarily because this mean the driver might take the van off-road on road conditions that the van was not designed for.

 

[asdrew]

Also, with a very rare drivetrain warranty issue, they would have to discover that you got a better differential than they supplied which is doubtful unless you say "gee do you think this is on account of the locker I put in there?" Then they'd have to prove it caused the problem. It is your van, get what you want to enjoy it and don't look back!

 

[kc8flb]

When you had your TrueTrac installed were you told that it would void your warranty? We would like one installed on our 2019 T350 but the differential shop we spoke with said they wouldn't do it because it would void the warranty.

Its not going to void your warranty. If your aftermarket part breaks, Ford is (of course) not going to cover it. If your aftermarket part breaks and doing so, breaks some of Ford's parts, Ford isn't going to cover that either. Get the truetrac installed. You will love it in snowy weather. Good luck.

 

[killadawg09]

I wonder if it's OK to use this? Gear Competition 75W-140 - Motul as I have tons left over from my Subaru..

 

[Manwithavan]

I had a True Trac installed yesterday at Jaws Gear and Axle in Sacramento. $1100 OTD. They used Shell Spirax HD Gear Oil, which is one brand recommended by Eaton. Seems really smooth so far, but have not had it off the pavement yet. Hope to test it out soon.

 

[Surf grocery]

I had a True Trac installed yesterday at Jaws Gear and Axle in Sacramento. $1100 OTD. They used Shell Spirax HD Gear Oil, which is one brand recommended by Eaton. Seems really smooth so far, but have not had it off the pavement yet. Hope to test it out soon.

I had a True Trac installed yesterday at Jaws Gear and Axle in Sacramento. $1100 OTD. They used Shell Spirax HD Gear Oil, which is one brand recommended by Eaton. Seems really smooth so far, but have not had it off the pavement yet. Hope to test it out soon.

I want it I need it

 

[impatient]

I wonder if it's OK to use this? Gear Competition 75W-140 - Motul as I have tons left over from my Subaru..

For a number of reasons, it shouldn’t be optimal: contains friction modifiers, synthetic (which I question whether that is really a bad thing), and the hot viscosity (“thick” at 170). But then, I’m trying to figure out where you heard this stuff would be good for a Subaru??? Maybe it’s the secret sauce we’ve all been looking for.


2015 Tall, Medium Length, Cargo, 3.5EB, pretty generic-looking, DIY camper

 

[killadawg09]

For a number of reasons, it shouldn’t be optimal: contains friction modifiers, synthetic (which I question whether that is really a bad thing), and the hot viscosity (“thick” at 170). But then, I’m trying to figure out where you heard this stuff would be good for a Subaru??? Maybe it’s the secret sauce we’ve all been looking for.


2015 Tall, Medium Length, Cargo, 3.5EB, pretty generic-looking, DIY camper

I ran this on my built RallyX build.. and no it should not come with friction modifiers.. that's the reason I suggested.. it is also ester based.. was great in my 550whp subie.. i assume it would be fine in the transit? Just asking really... and yes Motul is probably the best name in RallyX.. just ask Dirtfish what they use.. etc...

 

[glenngus]

thank you for the information it was helpful

 

[mrjmatthew]

For anyone wanting to attempt this install themselves, I installed one of these a few months ago. It really wasn’t that bad. Took me about 6 hours. You of course need some specialized tools to measure backlash and a legit vice for torquing down the pinion ring bolts. I used the shim kit from Yukon. Here’s the install prior to replacing the diff cover...

 

[impatient]

Mrjmathew, do you recall what fluid you used? (Fluid seems to be a fairly hot topic on these).

For anyone else who installed a Tru-trac, AND who used dino lube instead of synthetic, how often are you changing the fluid out?


2015 Tall, Medium Length, Cargo, 3.5EB, pretty generic-looking, DIY camper

 

[mrjmatthew]

Mrjmathew, do you recall what fluid you used? (Fluid seems to be a fairly hot topic on these).

For anyone else who installed a Tru-trac, AND who used dino lube instead of synthetic, how often are you changing the fluid out?


2015 Tall, Medium Length, Cargo, 3.5EB, pretty generic-looking, DIY camper

Lucas 80W90 GL5

 

[Optical_Transit]

Thank you for this write up. I have decided to go with the TrueTrac. Now, I have to find a shop near me that is able to do install this at a reasonable price.

Is it better to let the shop source the parts, or should I bring the parts in.
I would imagine it would be better for them to get the parts. I feel it's like brining your eggs to the diner, and they might not like it.

 

[EddieZ]

I want to say thanks, too, for this thread. I just had a TrueTrac added, as part of a major drivetrain repair (which I will detail elsewhere, with photos). The info here took the work out of having shops write estimates. The Ford dealership service center won out, due to flakiness of an independent shop. The service manager was trying to help me save money (and land the job) and suggested I buy the TrueTrac up front, so that he would not have to add markup. I got it for $703, delivered, from Summit Racing.

 

[takedown]

I had a True Trac installed yesterday at Jaws Gear and Axle in Sacramento. $1100 OTD. They used Shell Spirax HD Gear Oil, which is one brand recommended by Eaton. Seems really smooth so far, but have not had it off the pavement yet. Hope to test it out soon.

Did you have it re-geared too or are you on the stock ratio?

Thanks for the reference on price, seems affordable.

 

[OntheRoadAgain?]

I just picked up a 2015 Ecoboost HR with 150,000 miles. Has anyone done this on a high mileage vehicle yet?

Wondering if I should go ahead and also replace the pinion bearings and seal while I'm in there.

I was already thinking to replace outer bearings and carrier bearings on the axel.

 

[Optical_Transit]

Thanks for all the good info. Can anyone recommend a reputable shop in the Long Island, NY area they can recommend?

Is it better to buy the parts and bring it in, or is it better for the shop to source the parts?
Thanks in advance.

 

[AZ94Bronco]

Actually I think I could test this out....
Let me see about going back out to the same spot and do the same climb in 2 wheel drive with rear TruTrac vs 4 wheel drive Fr/Rr TruTrac.
Sounds like fun to me

A couple years late on this one, but I did this exact test in my Bronco. Two years ago while hunting, I got stuck in 4wd going through a particularly rough spot on the trial. Fast forward to last year. After having front and rear truetracs installed, I was able to easily crawl through that same trail section in 2wd with zero tire slippage. I had left in 2wd just as a test. Same tires, same trail, very different result. Street manners are exactly the same as OEM LSD. Def worth the upgrade.

 

[dinocarsfast]

Somebody posted this YouTube link on a different thread recently 😂

4x4 with opened diffs vs RWD with ARB locker vs RWD opened diff

 

[killadawg09]

BTW I had my TrueTrac on for over 4 months and 10k miles on it.. mainly towing another vehicle through mountains and extreme heat!! no issues whatsoever ran it with Motul Full Synthetic.. they make a version with no friction modifier.. so far all perfect.. MOTUL GEAR 300 75W-90 - Motul ... not to be confused with the LS version which does have additives.