Fluid capacities and OEM recommended specifications for maintenance on your 1994.5 to 2003 7.3L Power Stroke Engine.
7.3 PSD Fluid Capacities |
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Oil |
Capacity |
Notes |
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| Engine Oil | 15W-40 | 15 quarts with filter | Preferred Viscosity with ambient temperature above 30℉
Acceptable for ambient temps above 10℉ |
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| 10W-30 | Preferred Viscosity with ambient temperature between -10 to 30℉
Acceptable for ambient temperatures up to 90℉ |
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| 5W-30 | Acceptable viscosity for ambient temperature less than 30℉ | ||||||||
| 0W-30 | Acceptable viscosity for ambient temperature less than 0℉ | ||||||||
| Engine Coolant | Motorcraft VC5 | pre-99: 7.24 gallons, 29 quarts
99 – 2003: 8.2 gallons, 32.75 quarts |
50/50 concentrated coolant / distilled water mixture
In extreme cold climates up to 60/40 mixture can be used but DO NOT EXCEED 60/40 |
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| Supplemental Coolant Additive | Motorcraft VC8 | 1 pint per 4 gallons of coolant
1 pint = ~.6 SCA |
1 pint per 4 gallons of coolant
1 pint = ~.6 SCA |
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| Transmission Fluid (Automatic) | MERCON V Full Synthetic ATF | E4OD 4×2 15.7 quarts
E4OD 4×4 16.2 quarts 4R100 17.1 – 17.7 quarts |
replaces original MERCON spec for the E4OD and 4R100 | ||||||
| Transmission Fluid (Manual) | MERCON V Full Synthetic ATF | ZF S5 3.4 quarts
ZF S6 5.8 quarts |
replaces original MERCON spec for the ZF S5 and ZF S6 | ||||||
| Transfer Case Fluid | Motorcraft XL-12 transfer case fluid | 2.0 quarts | BW1356 transfer case | ||||||
| Dana 50 Differential Fluid | SAE 80W-90 Gear Oil | 1.9 quarts | (F250 IFS Front Axle) Preferably Synthetic | ||||||
| Dana 60 Differential Fluid | SAE 80W-90 or SAE90 Hypoid Gear Oil | 2.9 quarts | (Front Axle) Preferably Synthetic | ||||||
| Dana 80 Differential Fluid | SAE 75W-90 Gear Oil | 4.15 quarts | (Rear Axle) Full Synthetic
Limited Slip Differential May Require Friction Modifier Motorcraft XL-3 |
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| Sterling 10.25/10.50″ Differential Fluid | SAE 75W-140 Gear Oil | 10.25: 3.75 quarts
10.50: 3.45 quarts |
(Rear Axle) Full Synthetic
Limited Slip Differential May Require Friction Modifier Motorcraft XL-3 |
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| Dana 135 Differential Fluid | SAE 90W-90 Gear Oil | 12.25 quarts | (F550 Rear Axle) Full Synthetic
Limited Slip Differential May Require Friction Modifier Motorcraft XL-3 |
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