7.3 Idi Oil Type, Capacity, Filter, & Change Cost

7.3 Idi Oil Type, Capacity, Filter, & Change Cost

7.3 idi oil type: Maintaining the engine of a diesel requires the right oil to guarantee its long-lasting performance.

It is the 7.3 IDI engine is a well-known diesel engine that is used in a variety of automobiles and vehicles, including Ford trucks.

It is therefore important to know the different aspects of the 7.3 IDI oil type, which includes its importance, the kinds, benefits along frequently-asked queries.

This article will go over the time to go through everything you must be aware of about 7.3 IDI oil type.

7.3 Idi Oil Type

The 7.3L IDI requires a specific oil type to provide maximum performance and safety:

Oil TypeRecommended ViscosityNotes
API CJ-4/CI-415W-40Recommend for all applications
API CJ-4 Plus/CI-4 Plus15W-40This can be used to prolong intervals for oil changes
Synthetic Oil5W-40 or 10W-40Optional for better cold-start performance as well as longer-lasting protection

7.3 Idi Oil Capacity 

The capacity of the oil for the 7.3L IDI varies depending on the model and year of the engine:

Model EngineCapacity for Oil (with filter)
6.9L IDI (1983-1987)14 quarts
7.3L IDI (1988-1994)15 quarts
7.3L Motor Stroke (1995-2003)16 quarts

7.3 IDI Engine Specs

This table lists the main details for the 7.3 IDI engine:

Engine TypeIndirect Injection (IDI) Diesel V8
Production Years1988-1994
Displacement444 cubic inches (7.3 Liters)
Bore x Stroke4.11 inches 4.11 inches 4.18 inches
Compression Ratio21.5:1
Horsepower350 hp at 3,300 rpm (naturally aspirated) 200 horsepower at 3,300 RPM (turbocharged)
Torque338 lb-ft @ 1.400 rpm (naturally aspirated)
425 lb-ft of torque at 1.600 rpm (turbocharged)
Fuel SystemMechanical injection pump
AspirationTurbocharged or naturally aspirated
ValvetrainOHV, 2 valves per cylinder
Cylinder Block MaterialCast iron
Cylinder Head MaterialCast iron
WeightApproximately 750 pounds

7.3 Idi Oil Filter

Selecting the correct oil filter is vital to ensure the efficient flow of oil and the removal of contaminants. These are the filters that are recommended for the various 7.3L IDI models:

Engine ModelPart Number of the Oil Filter
6.9L IDI (1983-1987)FL-1A
7.3L IDI (1988-1994)FL-1A or FL-16
7.3L Power Stroke (1995-2003)FL-200S

7.3 Idi Oil Change Cost 

The price of the cost of a 7.3L IDI oil change can differ based on a variety of variables, such as the location, type of service (DIY or. professional) as well as filters and oils. This is a rough estimate:

LocationCost Price
Professional Service Center$120 – $170
Independent Service Center$80 – $130
DIY$50 – $90


Having the correct oil for the 7.3 IDI engine is crucial to Maximizing performance, longevity, And fuel efficiency.

Opt for conventional or synthetic blend oil and strictly follow the recommended oil change intervals. Avoid mixing different oil types.

Consult with an experienced mechanic for any concerns about the 7.3 IDI oil type. With proper care, the 7.3 IDI engine guarantees enduring and efficient performance for years.

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FAQ 7.3 idi oil type

What oil do you use in your Idi?

I used good old Walmart Supertech 15w-40 in my idi when I had it. Seemed to be a really good oil, and currently run supertech synthetic oils in all my vehicles. As already mentioned, these engines burn rotella oil somewhat quickly so I would use anything other than that.

What is the difference between Idi and straight 30-weight oil?

On the other hand, straight 30-weight oil is not polymerized, and can not shear back, it may eventually get to be awful dirty 30 weight, but it will be 30w forever. Just be aware that no matter what oil you use, change it often. IDIs are really dirty motors due to the large ring gaps, so a lot of crud gets in the oil.

What is the difference between Ford’s Idi and DI engines?

While both boasting a 7.3L displacement, the 7.3L IDI and 7.3L DI Power Stroke engines diverge significantly. In 1993, Ford unveiled the turbocharged 7.3 IDI, strategically targeting competition with GM’s 6.5L and Dodge’s 5.9L turbocharged diesel engines to elevate their competitive edge.

What kind of oil does a 7 3 Powerstroke take?

Oil for 7.3 Powerstroke Recommended by Manufacturer 1 Viscosity Grade. Ford recommends SAE 15W-40 and SAE 10W-30 viscosities for the 7.3 Powerstroke engine. … 2 Capacity. The 7.3 Powerstroke engine requires 15 quarts or 14.2 liters. … 3 Specification of Oil.