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Ian Christiansen
September 5th, 2010, 09:41
Does anyone have a 2001 XJ that can check the owners manual and tell me exactly what kind of fluid to use (and how much) for both the transfer case and transmission for a AW4 and NP231?

Tim_MN
September 5th, 2010, 10:08
A simple forum search finds this:

Cherokee Fluid Capacities

Engine Oil
-2.5L (4cyl) - 4.0 Quarts (3.8L)
-4.0L (6cyl) - 6.0 Quarts (5.7L)

Cooling System
-2.5L (4cyl) - 9.0 Quarts (8.5L)
-4.0L (6cyl) - 10.5 Quarts (9.9L)

Automatic Transmission
-4.0L (6cyl) The AW-4 Automatic Transmission uses
Transmission Fluid labeled Dexron III/Mercon.

- Drain and Re-fill = 4 Quarts (3.8L)
- Filter and complete fluid exchange = 8 Quarts (7.8 L)

-2.5L (4cyl) Chrysler/Mopar Automatic Transmissions use ATF+3 or ATF+4 Type 7176

Manual Transmission
-AX-5 5 speed manual - 3.3 quarts 75W-90 GL3 or GL4 (NOT GL5 or GL5 compatible as incorrectly stated in some Owners Manuals)
-AX-15 5 speed manual - 3.32 quarts 75W-90 GL3 or GL4 (NOT GL5 or GL5 compatible as incorrectly stated in some Owners Manuals)
-NV3550 5 speed manual - 2.1 quarts Mopar fluid part # 04874464AA or Snychromax (meets Mopar MS-9224 specs)

The NLGI specs are important - typical NLGI GL-5 gear oil carries added sulphur used as an Extreme Pressure (EP) lubricant. Especially when heated, sulphur is antagonistic to yellow (copper-based) metals - and the synchroniser rings and any bushings in the AX-15 are bronze. Most synthetic gear oils are rated GL-5 and are listed as "safe for use with yellow metals."

Unlike API specs (to API Service SL/CJ-4,) NLGI Service specifications are not reverse-compatible. Well-stocked parts houses will have both NLGI GL-3 and NLGI GL-5 mineral-based gear oil in stock all the time.

If you want to use a synthetic (RedLine, AmsOil, etc.) either check the back of the bottle or check the manufacturer's website to make sure it's safe for use with yellow metal - using sulphur-bearing gear oils usually results in draining your synchroniser rings at your next fluid change...

Transfer Case
-NV231 Part-Time (Command-Trac) - 2.2 Pints (1.0L)
Dexron III/Mercon or ATF+3 or ATF+4 Type 7176
-NV242 Full-Time (Selec-Trac) – 2.85 Pints (1.3L)
Dexron III/Mercon or ATF+3 or ATF+4 Type 7176

Front Axle
-Dana 30 - 2.5 Pts (1.2L) SAE 75W-90

Rear Axle
-When equipped, Trac-Lok Limited Slip rear axles require 4 ounces of Friction Modifier Additive

-Dana 35 - 3.5 Pints (1.66L) SAE 75W-90
-Dana 44 - 4.0 Pints (1.89L) SAE 75W-90
-Chrysler 8.25 - 4.4 Pints (2.0L) SAE 75W-90

For towing and off-road use SAE 75-140 synthetic

joe_peters
September 5th, 2010, 10:11
That would have been Dex III/VI as shipped.

Effective October 16th, 2007 Chryco declared that ATF+4 was good for use in the AW4 transmission.

There really isn't anyway to tell what has been put in your transmission/transfercase since that date.

Search, lots of discussions on this.

2.2 pints NP231.

If you are flushing the transmission it takes about 13 quarts. Drop the pan and replace the filter is 3.5-4 quarts. Dry fill of the transmission (less torque converter) is 16.5 pints

Good luck.