Wrangler fluid capacities are not a one-size-fits all proposition. In order to keep your JK in running condition, you have to make sure that the fluid levels are kept within optimal range, and if necessary, to replace missing fluid with the correct type.

Wrangler fluid capacities are not a one-size-fits all proposition. In order to keep your JK in running condition, you have to make sure that the fluid levels are kept within optimal range, and if necessary, to replace missing fluid with the correct type. Capacities in the JK Wrangler can vary depending on the year, make and model of your Jeep. The chart below will help you determine what type of oil to use for your JK, which transmission fluid you should use if your JK is a manual transmission, and what the limits are for your engine’s oil. Understanding the types and limits of fluid used for the cooling system, lubes, and transfer case fluids are crucial to keep your JK running and performing for many years to come. Take care of your Jeep and it will take care of you.

While maintaining all fluid capacities is important, one of the key areas to keep an eye on with the JK is the differentials. What is nice about the JK Wrangler is that you don’t have to remove the differential cover in order to make sure the fluid level is maintained. In general, if you do heavy driving, then differential fluids need to be changed every 15,000 miles, or the recommended mileage as listed in your owner’s manual. Submerging your axles in water will also make a difference on how often you service this crucial area. Understand that your JK Wrangler is made to handle all types of terrain, but you do have to do your part in maintaining its fluid levels, and preventing issues beforehand is much less expensive than corrective measures later. The following charts list the fluid capacities and types for your JK Wrangler.

Description

Type

Capacities

3.8L Engine Oil5W-206 Quarts / 5.7 Liters
3.6L Engine Oil5W-206 Quarts / 5.7 Liters
2.8L Diesel Engine Oil0W-40 *Diesel Engine Oil7 Quarts / 6.6 Liters
3.8L Coolant50/50 Mixture 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology) or equivalent13 Quarts / 12 Liters
3.6L Coolant 2013-1750/50 Mixture 10 Year/150,000 Mile Formula OAT (Organic Additive Technology) or equivalent10.5 Quarts / 9.9 Liters
3.6L Coolant 201250/50 Mixture 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology) or equivalent13 Quarts / 12 Liters
2.8L Diesel Coolant 2013-1750/50 Mixture 10 Year/150,000 Mile Formula OAT (Organic Additive Technology) or equivalent13 Quarts / 12 Liters
2.8L Diesel Coolant 2007-1250/50 Mixture 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology) or equivalent13 Quarts / 12 Liters
42RLE 4-Speed AutomaticATF+4 4 Quarts / 3.8 Liters (Service Fill) 8.8 Quarts / 8.3 Liters (Overhaul Fill)
545RFE (4x2) 5-Speed AutomaticATF+4 5.5 Quarts / 5.2 Liters (Service Fill) 14.8 Quarts / 14 Liters (Overhaul Fill)
545RFE (4x4) 5-Speed AutomaticATF+4 6.5 Quarts / 6.2 Liters (Service Fill) 16.9 Quarts / 16 Liters (Overhaul Fill)
NAG1, 5-Speed AutomaticATF+4 5.3 quarts / 5 Liters (Service Fill) 8.1 Quarts / 7.7 Liters (Overhaul Fill)
NSG370 ManualMopar Manual Transmission Lubricant or equivalent1.6 Quarts / 1.5 Liters
NV241 Transfer CaseATF+42.1 Quarts / 2.0 Liters
Dana 30 - Front Axle80W-90 Gear and Axle Lubricant2.1 Pints / 1.0 Liters
Dana 44 - Front Axle80W-90 Gear and Axle Lubricant2.7 Pints / 1.3 Liters
Dana 35 Axle80W-90 Gear and Axle Lubricant3.5 Pints / 1.7 Liters
Dana 44 - Rear Axle80W-90 Gear and Axle Lubricant4.75 Pints / 2.25 Liters
*Limited-Slip (Trac-lok) Rear Axles require the addition of 118 ml (4 oz.) Limited Slip Additive
*75W140 Gear and Axle Lubricant Recommended For Towing
Brake Master CylinderDOT 3 Brake FluidAs Required / To Full Mark
Clutch Master CylinderDOT 3 Brake FluidAs Required / To Full Mark
Power Steering ReservoirPower Steering Fluid +4 (If unavailable ATF+4 is Acceptable)As Required / To Full Mark