Rear Axle Fluid Change

[Cummins2014]

Bob, which happens to be a long time FCA employee, gave you the correct answer as far as the manufacturer is concerned. You have also been given lots of hands on feed back that, IMO prove the level isnt as critical as some make it out to believe. If you can not take the information provided and make your own educated decision, perhaps you would be better off taking your truck to a dealership and let them worry about such important matters

There seems to be nothing in the manual , it seems a mystery to the correct amount to put in. Think about it for awhile, and maybe you can reply back with something useful .

Heres the question for you there is a fill line mark on the OUTSIDE of these axle covers. Tell me how you will fill to that line, and how much to put in, just curious ????

Bob, the long time FCA employee's answer, I quote : "The fill line is the level it should be at" . I am curious as to how Bob the long time employee maintains that oil level, and knows somewhere near the amount to do so.

I don't care if the level is critical or not , but its on there for some reason, and NO ONE KNOWS .

 

[Cummins2014]

I found this thread https://www.turbodieselregister.com...spec-fill-level-and-break-in-procedure.68166/

which says...

American Axles

Dodge Trucks are now using American Axles for 2003 and later. Please make sure your Service Department is using the correct lubricant and adhering to the correct fill levels.

These axles do not require Friction Modifier, but do require a special synthetic lubricant. According to American Axle, this 75W-90 lubricant part number listed below is a pure synthetic lubricant and does not contain Phosphates. This is different from the 75W-I40 that is used on DANA and Corporate Axles.

Please use Mopar Part # 05102232AA on all American Axles

Caution: Overfilling these Axles may result in lubricant foaming and overheating!

9. 25 Front: 1/4" +/- 1/4" (Total of 1/2" below fill hole)

10. 5 Rear: 3/4" +/- 1/4" (Total of l" below fill hole)

11. 5 Rear: 1/2" +/- 1/4" (Total of 3/4" below Fall hole)

 

[Cummins2014]

Sorry I didn't see this until I had posted .

 

[Cummins2014]

I found this thread https://www.turbodieselregister.com...spec-fill-level-and-break-in-procedure.68166/

which says...

American Axles

Dodge Trucks are now using American Axles for 2003 and later. Please make sure your Service Department is using the correct lubricant and adhering to the correct fill levels.

These axles do not require Friction Modifier, but do require a special synthetic lubricant. According to American Axle, this 75W-90 lubricant part number listed below is a pure synthetic lubricant and does not contain Phosphates. This is different from the 75W-I40 that is used on DANA and Corporate Axles.

Please use Mopar Part # 05102232AA on all American Axles

Caution: Overfilling these Axles may result in lubricant foaming and overheating!

9. 25 Front: 1/4" +/- 1/4" (Total of 1/2" below fill hole)

10. 5 Rear: 3/4" +/- 1/4" (Total of l" below fill hole)

11. 5 Rear: 1/2" +/- 1/4" (Total of 3/4" below Fall hole)

So you can be anywhere from 1/4" below the fill hole to 3/4" below, so where does that fill line come in two play ??

 

[SnoKing]

And that amount was what . Its apparent SnoKing will not share that with me, if so he would have already have done so. This seems to be a secret with some

I do not recall how much we put back in. Just walked out to the truck and looked at log entry. Just says 16767 miles, serviced rear diff with Amsoil Sever Gear Lube 75W-110 on 9/26/2016. SnoKing

 

[JR]

So you can be anywhere from 1/4" below the fill hole to 3/4" below, so where does that fill line come in two play ??

Why is this so difficult? If it was so critical do you not think they would have a tighter range on the capacity?

+/- 1/4", for a total of a 1/2" variance. Oil expands and contracts. Anywhere in between there is no big deal.

Go out and measure the range on your engine oil disptick. There is 1-1/4" in the "safe zone" on my 2014. Anywhere in between is considered ok.
Every fluid you can check is the same . There is a range given for expansion and contraction of fluids, and a minimal loss.

 

[Cummins2014]

I do not recall how much we put back in. Just walked out to the truck and looked at log entry. Just says 16767 miles, serviced rear diff with Amsoil Sever Gear Lube 75W-110 on 9/26/2016. SnoKing

Thanks, I just found it, Correct amount " Rear Axle AAM 11.5 122 oz. 3.8 quarts. " " Front axle AAM 91/4 74 oz. 2.31 quarts.

I put in 4 quarts ,good to go

 

[Cummins2014]

Why is this so difficult? If it was so critical do you not think they would have a tighter range on the capacity?

+/- 1/4", for a total of a 1/2" variance. Oil expands and contracts. Anywhere in between there is no big deal.

Go out and measure the range on your engine oil disptick. There is 1-1/4" in the "safe zone" on my 2014. Anywhere in between is considered ok.
Every fluid you can check is the same . There is a range given for expansion and contraction of fluids, and a minimal loss.

Why is so difficult for you if someone wants to know, instead blindly following. You want to run that 2014 on the low end of the engine dipstick have at it. I prefer to run what is correct, and you do whatever !! ITs obvious you want to criticize instead of adding what was asked .

 

[Learjet]

SO.....back to my blue dot...I need to measure ...but I'm guessing that is 1/2"? or the fill line like it is stamped on some of the steel covers? FYI...using a good flashlight I can see the level....I guess you could bend a Q-tip and use it like a dipstick

 

[Cummins2014]

SO.....back to my blue dot...I need to measure ...but I'm guessing that is 1/2"? or the fill line like it is stamped on some of the steel covers? FYI...using a good flashlight I can see the level....I guess you could bend a Q-tip and use it like a dipstick

I watched a YouTube where a guy actually did make a dip stick to check his level. Supposedly overfilling and that could only be to the bottom of the fill hole could result in foaming and overheating , take it for what it’s worth

 

[Cummins12V98]

I do not recall how much we put back in. Just walked out to the truck and looked at log entry. Just says 16767 miles, serviced rear diff with Amsoil Sever Gear Lube 75W-110 on 9/26/2016. SnoKing

I think “I” was the one to put the lube in right? If so I did fill to bottom of hole.

 

[Shiner]

So the old rule of thumb still works. "stick finger in hole and as long as you touch lube with one section of finger in"....you're good. Here I thought I was gonna have to buy some fancy, schmanzy new tool, because manual said so. I like tools. Me gots so many tools, to do so many special things...….but the one tool that needs utilized the most, gets used the least......the BRAIN and something called "common sense". Don't construe my post as condescending, I too, have to stop myself from "overthinking" and use KISS method.
75-80 gear lube is spec'd too, do most of us use it....NOPE. Everything from the manufacturer is a compromise of sorts, so that same vehicle can appeal to more people. Somebody mentioned it already, but Engine oil dipstick is a great example, "safe range". Safe=ok, range=variable level.

 

[Cummins12V98]

2500/3500 axles Synthetic GL-5 SAE 75W-85 is recommended, right out of my manual.

Funny 75-90 is for 4500/5500's

 

[TFucili]

Take a zip tie and bend a 90 in it with a tail 1" long. Presto, a dipstick.

 

[Jim W]

This is to Cummins2014; I went back and checked my maintenance records and all three times that I changed the rear differential oil, I have put in 7.5 quarts.
As I noted I am using a Mag-Hytec cover which does add extra oil capacity to the differential housing. I checked the part number of AMSIOL gear lube that I purchased and it is for a quart container.

 

[Cummins2014]

This is to Cummins2014; I went back and checked my maintenance records and all three times that I changed the rear differential oil, I have put in 7.5 quarts.
As I noted I am using a Mag-Hytec cover which does add extra oil capacity to the differential housing. I checked the part number of AMSIOL gear lube that I purchased and it is for a quart container.

I got ya, that cover is just about double the capacity of the stock cover. I was thinking you meant 7.5 pints, now I understand.

I know I am overthinking just a bit , but things just didn't seem to add up , all is good, I have put approx. .2 quarts over what the capacity . Is is nice to know what its actually supposed to be. Whether that is critical or not ,some take this stuff pretty lightly, and some don't

 

[Shiner]

So the old rule of thumb still works. "stick finger in hole and as long as you touch lube with one section of finger in"....you're good. Here I thought I was gonna have to buy some fancy, schmanzy new tool, because manual said so. I like tools. Me gots so many tools, to do so many special things...….but the one tool that needs utilized the most, gets used the least......the BRAIN and something called "common sense". Don't construe my post as condescending, I too, have to stop myself from "overthinking" and use KISS method.
75-80 gear lube is spec'd too, do most of us use it....NOPE. Everything from the manufacturer is a compromise of sorts, so that same vehicle can appeal to more people. Somebody mentioned it already, but Engine oil dipstick is a great example, "safe range". Safe=ok, range=variable level.

75-85/ oops. Still an oddity.

 

[Cummins2014]

75-85/ oops. Still an oddity.

I went with the Amsoil Severe Gear 75/90, as good a price as any.

 

[Shiner]

I went with the Amsoil Severe Gear 75/90, as good a price as any.

I used 75/90 Full Syn as well, just don't recall the brand/too comfortable to run out to the shop. Whatever it was was $8/qt

 

[Cummins12V98]

I would be curious as what lube it is for $8 per quart.