Rear Diff and Transmission oil change

[jroyk]

Yes, for sure. I'm out of warranty now...probably should stick with what is working?

Amsoil Severe Gear worked great for me. No fussing with friction modifier and the squeeze bags it comes in makes it super easy to put it in.

 

[drag racer]

Regarding rear diff fluid...run 75w-85 or seeing some say 75w-90? What do you all think? Appreciate it.

Probably will not matter at all; I use RedLine 75W-85.

 

[2ndAmend]

Yes, for sure. I'm out of warranty now...probably should stick with what is working?

IDK, have you herd any complaints about the OEM fluid?

We are entering the area of free-fire opinions!

 

[Jimmy N.]

IDK, have you herd any complaints about the OEM fluid?

There's usually not enough of it is my main complaint.

Either way, Amsoil is better. Have solved a couple of problematic diffs using it.

 

[1971demon]

There's usually not enough of it is my main complaint.

Either way, Amsoil is better. Have solved a couple of problematic diffs using it.

Had a negative experience with Amsoil in motorcycles a few years ago....not a fan

 

[fubar569]

Regarding rear diff fluid...run 75w-85 or seeing some say 75w-90? What do you all think? Appreciate it.

I actually run Motul Gear Comp 75-140...but I dog the hell out of mine at the track and have a 1pc aluminum tuning fork...I mean driveshaft...

 

[fubar569]

...tranny was more expensive as it is sealed with a removable panel/cover that has the filter built into it that they replace when they do this...

Most 8HP have a Filtran (filter built into pan) but the hellcat specific 8HP90's do NOT. you CAN get a service kit that includes a new filter, gasket, fill/drain plug (forget which or if it's both) and all new pan bolts. I have one in my garage and can grab the part number tomorrow...

 

[16GoManGoHC2]

Amsoil Severe Gear worked great for me. No fussing with friction modifier and the squeeze bags it comes in makes it super easy to put it in.

I use this too in the cat, Redline in my Capri.

 

[Jimmy N.]

Had a negative experience with Amsoil in motorcycles a few years ago....not a fan

Most motorcycles don't have differentials.

 

[1971demon]

There's usually not enough of it is my main complaint.

Either way, Amsoil is better. Have solved a couple of problematic diffs using it.

Not enough???...WTF jimmie...it aint a cocktail...ya aint supposed to drink it...

 

[2ndAmend]

There's usually not enough of it is my main complaint.

Either way, Amsoil is better. Have solved a couple of problematic diffs using it.

I agree that sometimes you are lucky enough to find a solution that is a simple as changing fluid. My '04 Wrangler had valve tick, common problem due to #6 lifters getting gunked up. Took me 16 years to find that synthetic solved the prob.

That was the first time I ever witnessed a difference between conventional and syn, now I'm a fanatic!