JL JOURNAL – Axle Differential Fluid Change – How to do it Yourself

In spite of the fact that Cindy and I work from home and have half a dozen Jeeps that we can and do use as a daily driver, we’ve still managed to rack up 15,000 miles on our brand new Jeep JL Wrangler Rubicon Unlimited. And for us, that means it’s time to do some maintenance. Among other things, the differentials are something I typically service at this time but it’s also a good idea to do if you’ve been spending any time in some deep water. Fortunately, changing out the fluid is super easy to do on a JL Wrangler and it can be done in minutes using a 3/8” drive ratchet.

WHAT YOU WILL NEED
• 3/8″ Drive Ratchet
• Oil Catch Pan
• Chemical Resistant Yellow Teflon Tape or Paste
• Royal Purple 75W90 Gear Oil: https://amzn.to/2ApUHD0
• Royal Purple 75W140 Gear Oil: https://amzn.to/2Rrh6JR

FLUIDS YOU WILL NEED
186 FBI (Model 30) – Front Axle
MOPAR Gear & Axle Lubricant (SAE 80W-90) (API GL-5)
1.82 Pints/0.86 Liters

210 FBI (Model 44) – Front Axle
MOPAR Gear & Axle Lubricant (SAE 80W-90) (API GL-5)
2.18 Pints/1.03 Liters

200 RBI (Model 44) – Rear Axle
MOPAR Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
For trailer towing, use MOPAR Synthetic Gear & Axle Lubricant (SAE 75W-140).
Models equipped with Trac-Lok require an additive.
2.43 Pints/1.15 Liters

220 RBI (Model 44) Rear Axle – EDL
MOPAR Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
For trailer towing, use MOPAR Synthetic Gear & Axle Lubricant (SAE 75W-140).
Models equipped with Trac-Lok require an additive.
3.06 Pints/1.45 Liters

220 RBI (Model 44) Rear Axle – T/L
MOPAR Gear & Axle Lubricant (SAE 80W-90) (API GL-5) or equivalent.
For trailer towing, use MOPAR Synthetic Gear & Axle Lubricant (SAE 75W-140).
Models equipped with Trac-Lok require an additive.
3.02 Pints/1.43 Liters

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