Truck rear diff oil

[Summitric]

Differential Fluid Type

FRONT AXLE LUBRICANT SPECIFICATIONS

Motorcraft SAE 80W-90 Premium Rear Axle Lubricant

Ford Part Number	XY-80W90-QL
Ford Specification	WSP-M2C197-A

REAR AXLE LUBRICANT SPECIFICATIONS

DANA 80
Motorcraft SAE 75W-90 Synthetic Axle Lubricant

Ford Part Number	XT-75W90-QLS
Ford Specification	GL-5

DANA S110/S130
Motorcraft SAE 75W-140 Synthetic Rear Axle Lubricant

Ford Part Number	XY-75W140-QL
Ford Specification	WSL-M2C192-A

Ford 10.50 Inch Axle
Motorcraft SAE 75W-140 High Performance Rear Axle Lubricant

Ford Part Number	XY-75W140-QL
Ford Specification	WSL-M2C192-A

NOTE: Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or equivalent meeting Ford Specification EST-M2C118-A for complete refill of limited slip Ford axles. Ford design rear axles contain a synthetic lubricant that does not require changing unless the axle has been submerged in water.

 

[Summitric]

DUE @ 150000MILES/240000KMS(SEVERE SERVICE): Inspect

Air Filter Element

Check the air filter minder and reset after a new filter is installed.

Ball Joint

Brakes and Traction Control

Inspect brake pads,shoes, brake discs, drums, brake lines and hoses.

Cooling System

Inspect cooling system and hoses.

Exhaust System

Inspect exhaust system and heat shields.

Steering and Suspension

Inspect steering linkage, suspension and, if equipped, driveshaft and ball joints. If equipped, inspect and lubricate 4x2 ball joints and steering idler arms.

Universal Joint, Drive/Propeller Shaft

If equipped, inspect and lubricate 4x4 front axle shaft U-joints

Vehicle (Multi-Point Inspection)

Recommended by Ford

Wheels

Inspect wheels for end play and noise.

Replace

Drive Belt

Engine Oil

Replace oil only if NOT using Special Operating Conditions T, I or D.

Fluid - A/T

Fluid - Differential

Change front axle lubricant.

Fluid Filter - A/T

If equipped, change the external transmission fluid filter and in-line service installed transmission fuild filter.

Fuel Filter

Install new frame-mounted and engine fuel filters.

Oil Filter, Engine

Replace oil filter only if NOT using Special Operating Conditions T, I or D.

Rotate

Tires

Inspect tires for wear.

 

[Summitric]

I would still recomend diff & transfer case service and transmission service &/or flush every 75000 kms

 

[Trashy]

I would still recomend diff & transfer case service and transmission service &/or flush every 75000 kms

Should I just wait until I hit 150K and do it twice


Sent by my thumbs

 

[Trashy]

Maybe not...... That might be 5 years from now!!!


Sent by my thumbs

 

[ZRrrr]

I like the Redline products for the drivetrain, especially rear diff when towing.

From their website regarding the 75W 140..... "Contains additional friction modifiers for suitablity with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required"

http://www.redlineoil.com/product.aspx?product=57914

 

[Badass69]

Honestly my suggestion is always swap the fluid shortly after the purchase of the truck if you are buying it new. The amount of metal dumped in the oil when the gear set wears in is pretty astounding and allowing that garbage to float around in there for the next 50000 + miles always boggled my mind. I know the oem's seem to think it's just fine.... because as long as it makes the warranty period why should they care...... or if it by chance doesn't they can just run on the grounds you abused it and void the warranty anyhow. I am running Amsoil or Mobil depending on what it is. My 05 has a Detroit Locker and I went with 75W140 Amsoil this time. I get Amsoil for a decent price through a good friend of mine which is the only reason I use the stuff.