[Stealthv8!]

M6 2016 Hellcat challenger just hit 50k. I was told to change the differential fluid and transmission fluid. I don’t want to mess this up and want to get the right stuff. So please guys help me out what fluid brand should I get for the differential and m6 transmission and how much quarts should I get for each. I searched but I really couldn’t make the right decision on what to buy. Appreciate it thank you.

 

[baabootoo]

Ok, who told you????????? Have you read the manual? My Charger said ONLY if it's a fleet vehicle.

 

[Stealthv8!]

Ok, who told you????????? Have you read the manual? My Charger said ONLY if it's a fleet vehicle.

i read the manual I understand it says it’s supposed to be life guaranteed but was at a car meet and apparently a lot of the guys changed there diff fluids at 50. I also don’t baby this car but again do I really need it then that’s why I’m coming here for everyone’s advice.

 

[JeffL]

i had the M6 and diff fluid changed at the dealer in my white car. $100 each maybe? i don't really remember

 

[shademaker]

https://www.tremec.com/anexos/TREMEC_TR-6060_1017.pdf

 

[Stealthv8!]

i had the M6 and diff fluid changed at the dealer in my white car. $100 each maybe? i don't really remember

did they say why it needed to be done considering srt says to change it only if a fleet or police car. I have no noise when turning or no noise period but obv want my car to be running right

 

[Stealthv8!]

https://www.tremec.com/anexos/TREMEC_TR-6060_1017.pdf

Any brand that’s worth buying for the manual transmission fluid?

 

[JeffL]

no i asked them to do it. piece of mind i guess

 

[Stealthv8!]

I did call parts up at a local dealer. They said they are using mopar atf+4 for the manuals for 6 quarts a case is 91.00. Is that right or is there a better brand for the money? Also is the mopar atf +4 ok?

 

[shademaker]

I would just use what the service department you typically use says to use I would guess.

 

[2ndgen]

There were some long threads on the topic of diff fluids. Someone posted some actual test result data. The takeaway was:

It takes 1.16 qts
It must meet GL-5 spec
Recommends 75W85
The Mopar supplier is actually Castrol
It needs LSD additive, whether it comes with it or added separately.

Top brands were:

• AMSOIL Severe Gear 75W-90
• Red Line Synthetic 75W-90 (or 75W-85 is fine)
• Castrol SYNTEC 75W-90

brands/fluids to avoid (they all failed the tests one way or another):

• Torco
• Royal Purple Max-Gear 75W-90
• Valvoline High Performance 80W-90
• GM Synthetic Axle 75W-90
• Mopar synthetic 75W-90 w/Mopar LS additive
• Pennzoil Gearplus 80W-90
• Mobil 1 Sythentic 75W-90
• Pennzoil Sythentic 75W-90
• Lucas 75/90 Synthetic
• Castrol Hypoy C 80W-90
• Valvoline SynPower 75W-90

For transmission fluid:
stock is Dexron III ATF (mopar ATF+4)
Tremec recommends Mobil 1 ATF full synthetic for the TR6060.


The full system is 4.2qts--you have to flush the aux cooler and cooler lines also.

Toddy (BBG) recommends frequent fluid changes on the M6:

• transmission every 3k
• diff every 4-5k

 

[Slidd]

Under hard usage the diff needs more service. In the SRT manual it says to change the diff fluid after every 4 hours of track time to give you an idea.

I did call parts up at a local dealer. They said they are using mopar atf+4 for the manuals for 6 quarts a case is 91.00. Is that right or is there a better brand for the money? Also is the mopar atf +4 ok?

Mopar ATF+4 is fine.


Sent from my SM-N960U using Tapatalk

 

[Dennis H]

I’d run it another year then drain/fill with Amsoil if there are no drivability issues.