I recommend SAE 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil
PM me if you can't find a dealer. I will.
Here's all you need to know about AMSOIL products for your truck:
2003 FORD TRUCKS F250 HD PICKUP 6.0L 8-cyl Engine Code [P] TurboDiesel
FILTERS
Oil Filter: 57311 [1]
Oil Filter: EAO88 Absolute Efficiency Oil Filter [2]
Oil Filter: 57312 WIX 57312 Oil Filter [2]
Air Filter: PF9050P INJEN-AMSOIL Air Intake System [3]
Air Filter: P603577 P603577 Power Core Air Filter [3]
Air Filter: 42731 WIX 42731 Air Filter [3]
Fuel Filter: FFK60 Fuel Filter for Ford 6.0L Diesel Pow ...
Fuel Filter: 33899 WIX 33899 Fuel Filter
Trans Filter: 57702 WIX 57702 Auto Tran Filter
1. short post w/ no spring
2. spring-loaded long post
3. PF9050P is INJEN Filter Kit With MAF Sensor
PF9049P is INJEN Filter Kit Without MAF Sensor
TRICO WIPER BLADES
Blade Class Driver Passenger Rear
NEOFORM T16200 T16200
EXACTFIT T201 T201
WINTER T37205 T37205
OKTANE 20 inch 20 inch
LUBRICANTS & FLUIDS
Engine Oil
Grade 1......CI-4+
SAE 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil
Synthetic Blend 15W-40 Diesel Oil
Synthetic 5W-40 Premium Diesel Oil
Series 3000 Synthetic 5W-30 Heavy Duty Diesel Oil
-9 to 90°F......10W-30[1]
-20 to 30°F......5W-30, 5W-40[2]
-20 to 0°F......0W-30[2]
Above 10°F......15W-40[3]
Manual Transmission,5-SPD ZF.....MA5[4]
Synthetic Automatic Transmission Fluid
Manual Transmission,6-SPD ZF S6-650.....MA5
Synthetic Automatic Transmission Fluid
Automatic Transmission,5R110W.....MSP[5]
Synthetic Automatic Transmission Fluid
Automatic Transmission,W/ 4R100.....MA[6]
Synthetic Automatic Transmission Fluid
Torque-Drive™ Synthetic Automatic Transmission Fluid (ATD)
Differential, Front .....GL-5
All Temps......90
SAE 80W-90 Synthetic Gear Lube
Severe Gear 75W-90
SAE 75W-90 Synthetic Gear Lube
Controlled Slip Differential, Rear Dana 135.....GL-5*[7][8]
All Temps......75W-140
Severe Gear 75W-140
Controlled Slip Differential, Rear Dana 135.....GL-5*[9]
All Temps......75W-140
Severe Gear 75W-140
Standard Differential, Rear Dana 80.....GL-5[9]
All Temps......75W-90
Severe Gear 75W-90
Controlled Slip Differential, Rear Dana 80.....GL-5*[9][10]
All Temps......75W-90
Severe Gear 75W-90
Standard Differential, Rear Ford.....GL-5[11]
All Temps......75W-140
Severe Gear 75W-140
SAE 80W-140 Synthetic Gear Lube
Controlled Slip Differential, Rear Ford.....GL-5*[11][12]
All Temps......75W-140
Severe Gear 75W-140
Standard Differential, Rear S110, S130.....GL-5[13]
All Temps......75W-140
Severe Gear 75W-140
SAE 80W-140 Synthetic Gear Lube
Transfer Case,.....MA
Synthetic Automatic Transmission Fluid
Torque-Drive™ Synthetic Automatic Transmission Fluid (ATD)
Fluids
Power Steering Fluid.....MA5
Synthetic Automatic Transmission Fluid
Brake Fluid.....HBH
Series 600 DOT 4 Racing Brake Fluid
Clutch Fluid.....HBH
Series 600 DOT 4 Racing Brake Fluid
1. Ford TSB 05-16-6 states that SAE 10W-40 is acceptable
to use in operating temperatures from -1 °C (31 °F) to
32 °C (90 °F).SAE 10W-40 is the preferred viscosity if the
operating varies from -20 °C (-4 °F) to -1 °C (31 °F).
2. Ford TSB 05-16-6 states that the shown viscosity is
acceptable to use in the shown temperature range.
3. Ford TSB 05-16-6 states that SAE 15W-40 is acceptable
to use in operating TEMPS from -12 °C (11 °F) to
-1 °C (31 °F). SAE 15W-40 is the preferred viscosity if the
operating is above -1 °C (31 °F).
4. ZF 5-speed TRANS requires synthetic oil, Ford part no.
XT-2-QSM.
5. Mercon-SP is not interchangeable W/ Mercon, Mercon-V or
Mercon Synthetic.
6. 7. Synthetic oil is required.
8. Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or
equivalent meeting Ford Spec EST-M2C118-A for complete
refill of limited slip axles.
9. Synthetic oil is required.
10. Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or
equivalent meeting Ford Spec EST-M2C118-A for complete
refill of limited slip axles.
11. Synthetic oil is required.
12. Add 8 oz. (236 ml) of Additive Friction Modifier XL-3 or
equivalent meeting Ford Spec EST-M2C118-A for complete
refill of limited slip axles.
13. Synthetic oil is required.
CHASSIS LUBRICATION
Four-wheel drive
0-7 Fittings, 0 Plugs..........LM
Series 2000 Synthetic Racing Grease
Synthetic GHD Heavy-Duty EP Grease
Synthetic Multi-Purpose Grease NLGI #2
Two-wheel drive
4-10 Fittings, 0 Plugs..........LM
Series 2000 Synthetic Racing Grease
Synthetic GHD Heavy-Duty EP Grease
Synthetic Multi-Purpose Grease NLGI #2
CAPACITIES
Engine, with filter..........15.0 quarts[1]
Cooling System, Initial Fill..........28.0 quarts
AMSOIL Antifreeze and Engine Coolant
Automatic Transmission, 5R110W Initial Fill..........7.5 quarts[2]
Automatic Transmission, Total Fill
5 speed 5R110W..........19.0 quarts
4 speed 26 plate 4R100..........18.0 quarts
4 speed 20 plate 4R100..........17.0 quarts
Manual Transmission, 5-SPD Mazda..........7.6 pints
Manual Transmission, 5-SPD ZF..........6.8 pints
Manual Transmission, 6-SPD W/ OCOOL..........13.0 pints
Manual Transmission, 6-SPD W/O OCOOL..........12.0 pints
Differential, Dana 50 Front..........3.8 pints
Differential, Dana 60 Front..........5.7 pints
Differential, Dana 135 Rear..........31.0 pints
Differential, Dana 80 Rear..........8.4 pints[3]
Differential, Ford 10.5 ring gear Rear..........7.0 pints
Transfer Case,..........4.0 pints
1. When refilling, remove dipstick to provide adequate venting
and allow oil to flow into crankcase.
2. With engine automatic transmission operating temperature, shift through all
gears. Check fluid level in PARK and add fluid as needed.
3. Fill to no more than 1/4 to 9/16" below fill plug hole.
TORQUES
Oil Drain Plug.....18 ft-lbs
Transfer case NV271
Fill Plug.....20 ft-lbs
Drain Plug.....20 ft-lbs
Manual Transmission ZF S6-650
Fill Plug.....26 ft-lbs
Drain Plug.....26 ft-lbs
SERVICE INTERVAL
AMSOIL Product Recommendation and Drain Interval Guide (g1490)
OTHER TOP QUALITY PRODUCTS
Mothers® Car Care Appearance Products
By-Pass Oil Filters