I use 75-140 on both differentials; I know the price of oil has gone up. I was paying $10 for a quart of Royal Purple a few months ago. Last night when I walked in to Pep Boys it’s now $18.
How much are you guys paying per quart of gear fluid?

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"I'm the guy who does his job, you must be the other guy"
02 Black UNlimited Edition 4X4 Select Trac Liberty Towing/Off Road Packages 245/75/16 on black Moabs
RL diff cover/Super Skink sliders, Rusty's 2.5" Coil Lift w/ clevis lift, Roof basket W/Hella FF75...
On the prowl for an M416/M101/M100 trailer
L.O.S.T. Member 2877

Wow, 18 bucks for a quart? I'm not sure what royal purple gear fluid costs over here, but it was 7 dollars a quart for 5w30 last time I changed my oil. I'll swing by the auto parts store over here after work and see what it costs since it's about that time anyway.

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02' KJ Limited/Frankenlift I HD Coils
245/75 Big Foot A/T's on Soft 8's
EBC Greenstuffs 7000
K&N Air Filter
Full set Mopar skids
Sirius Sat Radio
Cheapa$$ Subwoofer
Custom pinstripes:)

About $8 for 75w90 mobil 1 synthetic.

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2002 Jeep KJ Sport 3.7L 4x4

245/75-16 Mastercraft Courser HSX, 16x7 Cragar, 2" OME MD Lift, ARB Bumper
AEM Brute Force Cold Air Intake, Flowmaster Super 44 Muffler

Currently working on: Full service on transmission & bed-lining ARB bumper

viewtopic.php?f=43&t=84650

Under $17 a Qt for Amsoil Severe Gear in 75w140 To your door. (for 4 qts)

Oh and it kicks RP's butt in testing. (then again, so did several other brands)

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

Didn't go to pep boys, but at Checkers it's 13.95 per quart for royal purple.

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02' KJ Limited/Frankenlift I HD Coils
245/75 Big Foot A/T's on Soft 8's
EBC Greenstuffs 7000
K&N Air Filter
Full set Mopar skids
Sirius Sat Radio
Cheapa$$ Subwoofer
Custom pinstripes:)

Shame it isn't worth that much. You would do better w/ Castrol Syn gear oil or several other brands that I bet are cheaper.

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

I stopped by Autozone and they had Castrol at $16.
I’m just looking for the best price and I can’t believe how much they have gone up.

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"I'm the guy who does his job, you must be the other guy"
02 Black UNlimited Edition 4X4 Select Trac Liberty Towing/Off Road Packages 245/75/16 on black Moabs
RL diff cover/Super Skink sliders, Rusty's 2.5" Coil Lift w/ clevis lift, Roof basket W/Hella FF75...
On the prowl for an M416/M101/M100 trailer
L.O.S.T. Member 2877

Yep, all oil products regardless of syn or dino have gone up due to rising additive and base prices. fwiw, some Amsoil prices are slated to drop come March. Demand went down so prices did too and they will pass that on to the consumer. Just makes me like my extended service intervals all that much more!

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

Personally we buy the stuff in 5 gallon buckets. Its under $100 and it lasts a good while. Weve got 8 diffs to take care of so we need it.

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LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
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http://www.cardomain.com/id/jeepjeepster

Glad I stocked up on my gear oil,bought 18qts of Mobil1 75w-140 at $8.99 per qt (on sale) at autozone about a year ago.Just enough for break-in for my new axles then one more fill.

I noticed that all the oil prices have been going up.

Last year I bought 4 quarts of Valvoline Syn 75-140 for the diffs for around $10 a bottle. I am not sure what it is now so I will have to check.

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05 BLACK KJ - 42RLE & NP242
Skids, Hooks, Bent Rock Rail, Lifted, A/T's, etc.
NY and PA and Florida ONF Special Custom Organic Trail Rash