Post your latest differential oil/transfer case change

[panthermike]

2018 Mazda CX-9- 60,971 miles.

Decided to do transfer case, differential, and transmission as it is due and we have some big trips coming up. To my surprise the transfer case fluid and differential fluid which call for 75W85 looked really good just an Amber color, no gray or anything unusual. Only oddity I thought was plug size: differential fill plug is 23 mm, drain plug is 24 mm and both on transfer case are 24 mm.

Both the rear differential and the transfer case got Royal Purple 75W90 with 2oz LG gear mixed in bottle. Common to use RP on these Mazdas as the spec calls for a GL4 requirement.

 

[4WD]

2020 Jeep Rubicon front Dana @ 22k … 3rd change (Dino) to achieve no visible metal … Now synthetic …

 

[FTTSHO]

2001 Chevy S10 Blazer 4x4 with 104,000 miles. Just did the transfer case, front and rear diff fluid change. Next on the list is the power steering fluid and the transmission filter and fluid change.

Out: Unknown transfercase oil and gear oils with unknown mileage. They were black. There was no metal on the bottom of the drain pan I used, so I guess it’s all good.

In: Valvoline Maxlife ATF red bofor the NV233 transfer case // Supertech 80w90 conventional gear oil for front and rear diff.

I bought a gallon of this conventional supertech gear oil, and it was very cheap compared to other options, I think I got it for $8. It was more than enough to do the front and rear diff.

 

[racer12306]

2019 Ram 1500 Classic
61000 miles

Front Diff
Out: OEM (Should've been 75w85)
In: HPL Differential Life 75w90

Transfer Case
Out: OEM (Should've been Shell Spirax S2)
In: HPL ATF Blue

Rear Diff

I'm not sure what surprised me more, how big of a hex was needed for the rear diff drain plug or that my dad didn't have one

Time to order a 14mm hex socket. Probably just handle it in my driveway rather than on his lift since I can slide right under the backend of the truck. It'll get HPL Diff Life 75w90 as well.

 

[dwcopple]

92 K1500 Sierra XC
Out: unknown
In: Pennzoil 80w90 conventional just shy of 2 qts. I removed the old fluid with my vacuum extractor unit.

 

[The Critic]

2016 MB E350, 195K

Out: FUCHS TITAN SINTOPOID FE SAE 75w-85, 65K miles
In: Same

 

[Kennedy01]

2008 Chevrolet Tahoe
Rear differential
Out: Valvoline synthetic 75w90
In: Mobil 1 75w90

 

[cw6mt mkvigli]

2018 Audi Q7 3.0T - 58k miles

ZF 8 Speed Trans
Out: OEM fill
In: ZF lifeguard 8
Also, new OEM trans pan since filter is integrated into trans pan housing

Front diff
Out: OEM fill
In: Ravenol 75w-90 VSG

Transfer case
Out: OEM fill
In: Ravenol AWD-TOR

Rear diff
Out: OEM fill
In: Ravenol 75w-90 VSG

 

[racer12306]

2019 Ram 1500 Classic
61000 miles

Front Diff
Out: OEM (Should've been 75w85)
In: HPL Differential Life 75w90

Transfer Case
Out: OEM (Should've been Shell Spirax S2)
In: HPL ATF Blue

Rear Diff

I'm not sure what surprised me more, how big of a hex was needed for the rear diff drain plug or that my dad didn't have one

Time to order a 14mm hex socket. Probably just handle it in my driveway rather than on his lift since I can slide right under the backend of the truck. It'll get HPL Diff Life 75w90 as well.

Finally got to the rear diff

61840 miles

Out: OEM (Should be 75w90)
In: HPL Differential Life 75w90

 

[Kennedy01]

2012 Chevrolet Suburban 4wd
Front and rear differentials
Front
Out: Valvoline conventional 80w90
In: Swepco 202 MolyXP 75w90
Rear
Out: Valvoline synthetic 75w90
In: Swepco 202 MolyXP 75w90

 

[Wheel366]

2018 Subaru Legacy Sport.
47345 miles
Front and rear diffs.
Out: OEM
In: Some type of 75W-90. That's all that's listed on the invoice.

 

[KlubMarcus]

Follow up from last year. Drain and fill of a 2017 Honda Pilot Elite AWD transfer case. Honda OEM fluid went out. MasterPro 75W-90 full synthetic gear oil went in. No problems to report.

 

[MrJayhawk]

2018 BMW X5 35i Xdrive
49520 miles
Out: factory fill
In: synthetic fluid—had indy shop do it and thats all the detail it had

 

[cptbarkey]

About a month ago:

1999 Silverado 2500 (newer body style) at 129000 miles.
Rear differential Out: No idea, it looked okay-ish. It was in there since at least 2007. 16 years? It only gets 1-3k miles per year.
In: Vavoline 75w90.

2010 GX 460 at 62500 miles:
Front differential Out: I dont know, probably original 13 year old fluids.
Rear differential Out: I dont know, probably original 13 year old fluids.
Transfer case fluid Out: I dont know, probably original 13 year old fluids.

In: A mix of Vavoline 75w90 and M1 75w90 into all 3 units. Am I going to trigger someone with not using straight 75 in the transfer case? 1000 miles later and its ok so far.

 

[Kennedy01]

2001 Ford Ranger
Rear differential, limited slip
Out: unknown oil
In: Mobil 1 75w90

 

[RFGuy_KCCO]

2016 VW Touareg V6 Executive
66,000 miles

Front Diff:
Out: OEM fill
In: Ravenol VSG 75W-90

Rear Diff:
Out: OEM fill
In: Ravenol VSG 75W-90

Transfer Case:
Out: OEM fill
In: Ravenol DTF-1

 

[Sam_Julier]

1991 Volvo 240 sedan, 225,100 miles

Out: LM 85W90 GL-5
In: same

Had a tiny weep in the drain plug. Cleaned and chased the threads and cleaned the mating surface. Found old Teflon tape.

The magnetic drain plug still has a fair amount of black goo.

 

[Kennedy01]

2012 Ford Mustang
Out: unknown oil
In: Royal Purple Max Gear 75w140

 

[dedonderosa]

2017 Toyota 4R TRDP
50k miles (second change) 1st was at 15k miles
Valvoline 75w90 syn in front diff, transfer case , rear diff

 

[MSCH]

2016 Ram 3500 w/AAM 11.5 ring and pinion.. 410. 143k miles.

on return from a RV trip to Alaska **** thing was making noises... I'm thinking it wore alot on the back side of the gears just because of all the steep descents with exhaust brake. it was fairly quiet under load but it was starting to chatter a bit when it unloaded ( coast) and then it would whine on decel...

so I took the rear cover off for inspection.. gears look fine. lotta fine metal particulates in the bottom of the diff... flushed the diff housing out with soap and water until it was completely clean. Then I took the bearing caps loose and basically reset the backlash by hand... filled her up with whatever gear lube I have laying around and whaddya know, it quieted down considerably.