Replacing all Lubes
JK Jedi
Joined: Feb 2007
Posts: 7,568
Likes: 3
From: Denver, CO
Automatic Transmission Mopart ATF+4 Automatic Transmission Fluid
Manual Transmission Mopart Manual Transmission Lubricant or equivalent (meeting the requirements
of DaimlerChrysler Material Standard MS-9224)Make SURE you use the correct API GL rated oil in the manual transmission. I once used the wrong number and the synchros went straight to hell. The synchros need the correct additives, as defined by the API GL number.
Transfer Case Mopart ATF+4 Automatic Transmission Fluid or equivalent.
Axle Differential (Front) Mopart Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
Axle Differential (Rear) 198 RBI (Model 35) and 226 RBI (Model 44) - Mopart Gear & Axle Lubricant
(SAE 80W-90) (API GL-5) or equivalent. For trailer towing, use Mopart
Synthetic Gear & Axle Lubricant (SAE 75W-140) or equivalent. Models
equipped with Trac-Lok require an additive.
Brake Master Cylinder Mopart DOT 3 Brake Fluid, SAE J1703 should be used. If DOT 3, SAE J1703
brake fluid is not available, then DOT 4 is acceptable. Use only recommended
brake fluids.
Power Steering Reservoir Mopart ATF+4 Automatic Transmission Fluid
Manual Transmission Mopart Manual Transmission Lubricant or equivalent (meeting the requirements
of DaimlerChrysler Material Standard MS-9224)Make SURE you use the correct API GL rated oil in the manual transmission. I once used the wrong number and the synchros went straight to hell. The synchros need the correct additives, as defined by the API GL number.
Transfer Case Mopart ATF+4 Automatic Transmission Fluid or equivalent.
Axle Differential (Front) Mopart Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
Axle Differential (Rear) 198 RBI (Model 35) and 226 RBI (Model 44) - Mopart Gear & Axle Lubricant
(SAE 80W-90) (API GL-5) or equivalent. For trailer towing, use Mopart
Synthetic Gear & Axle Lubricant (SAE 75W-140) or equivalent. Models
equipped with Trac-Lok require an additive.
Brake Master Cylinder Mopart DOT 3 Brake Fluid, SAE J1703 should be used. If DOT 3, SAE J1703
brake fluid is not available, then DOT 4 is acceptable. Use only recommended
brake fluids.
Power Steering Reservoir Mopart ATF+4 Automatic Transmission Fluid
JK Newbie
Joined: Dec 2007
Posts: 21
Likes: 0
From: Gunnison, CO
I used 75-140 AMSOil in the diffs. AMSOil MTF 5-30 in the tranny and AMSOil ATF in the transfer case and the whole drive train is much smoother and i picked up about 1.5 mpg. As a side note, the folks at chrysler must have given zero though about putting the manual tranny drain plug an inch above the exhaust. It makes you use a suction gun. IDIOTS!!!
