7.3 Powerstroke Oil Change Interval Guide: Don’t Let Your Engine Suffer!

by | Mar 19, 2023 | Ford | 0 comments

If you’re a proud owner of a 7.3L Powerstroke, you know these trucks can withstand almost anything. But don’t let that convince you to skimp on maintenance! Regular upkeep is vital to prolonging your truck’s lifespan and ensuring it runs smoothly. And let’s face it, who doesn’t want a smooth ride?

So, what’s the deal with 7.3 Powerstroke oil change intervals? Our Service Manual has got you covered! With expert advice on the best oil, filters, and fluid capacities, you’ll be cruising quickly. Keep your truck running like a dream with our guide!

7.3 Powerstroke Oil Change Interval Guide

Regularly maintaining your 7.3L Powerstroke engine is essential if you want it to last as long as possible. The following is a suggested routine for upkeep under typical circumstances of use:

How many miles between oil changes 7.3 Powerstroke?

Oil and oil filters should be changed every 5,000 miles (or 8,000 kilometers) to maintain the engine in peak condition.

How often should I change the fuel filter on my 7.3 Powerstroke?

You should replace the gasoline filter every 15,000 miles (or when the filter limitation signal comes on), around 25,000 kilometers.

How often should you change the air filter on 7.3 Powerstroke?

Maintaining a clean air filter is essential for a healthy engine and gas mileage. A filter change is recommended every 30,000 miles or 30 months. The air filter has to be changed immediately if the restriction indicator reads red.

Coolant flush

Overheating and engine damage may be avoided by flushing the cooling system every 50,000 miles and then every 30,000 miles.

Automatic Transmission Fluid

Keep your automatic gearbox tip-top shape by changing the Fluid every 30,000 miles (or 50,000 kilometers).

How many quarts of transmission fluid does a 7.3 Powerstroke hold?

5.81 QTS. Fill up to the line on the reservoir.

Lubricate and inspect the automatic transmission’s shift linkage.

Check and lubricate the shift linkage of an automatic transmission every 5,000 miles and again every 10,000 miles after that.

Clutch Release Lever

The clutch release lever must be examined and greased every 5,000 miles, then every 15,000 miles, to keep it operating smoothly.

Manual transmission fluid change

Always change your manual transmission’s Fluid and filter at 60,000 miles or 100,000 kilometers at the recommended intervals. Also, the transmission filter should be replaced every 30,000 miles (or 50,000 kilometers).

Transfer Case

Every 60,000 miles (or 100,000 kilometers), the transfer case should be maintained by changing the Fluid.

Front and Rear Differentials

Changing the Fluid in your front and rear differentials every 99,000 miles or immediately if your car has been immersed in water is essential to avoid rust and corrosion.

Recommended 7.3L Powerstroke Maintenance Parts, Filters, and Fluids

Keeping your 7.3L Powerstroke running like a machine requires well-oiled parts! And while maintaining your vehicle may not be as exciting as taking it for a spin on the open road, it’s essential for the longevity and performance of your truck. Lucky for you, we’ve got all the details on the best OEM maintenance parts, filters, and fluids to keep your Powerstroke purring like a contented kitten.

Recommended Engine Oil for 7.3L Powerstroke

When it comes to the engine oil of your 7.3L Powerstroke, it’s essential to use the right one to ensure maximum performance and protection. Various options are available in the market, but the manufacturer recommends Motorcraft 15W40 as the primary choice. Shell Rotella T4 and T6 are popular alternatives that provide excellent protection and performance.

Engine Oil Filters for 7.3L Powerstroke

A quality engine oil filter is crucial to ensure the oil is filtered properly and contaminants are kept out of the engine. The Motorcraft FL-1995 and Ford F4TZ-6731-A are the recommended filters for the 7.3L Powerstroke engine. A high-quality filter ensures the engine stays healthy and protected from potential damage.

Fuel Filters for 7.3L Powerstroke

The fuel filter in your 7.3L Powerstroke is an essential component that must be changed regularly to keep your engine running smoothly. The Motorcraft FD4595 is the recommended fuel filter for 1994.5-1997 models, while the Motorcraft FD4596 is the recommended filter for 1999-2003 models. Replacing the fuel filter at recommended intervals helps to maintain fuel efficiency and prevents potential issues with the fuel system.

Coolant for 7.3L Powerstroke

Coolant is a critical component that helps regulate your engine’s temperature and prevent it from overheating. The recommended coolant for your 7.3L Powerstroke is a 50/50 mixture of Motorcraft VC-5 coolant and distilled water. Following the owner’s manual’s recommendations is essential to ensure that the coolant is mixed correctly and that the system is flushed and appropriately filled.

Transmission Fluid and Filter for 7.3L Powerstroke

Maintaining the transmission system in your 7.3L Powerstroke is essential for ensuring smooth shifting and longevity of the transmission. The Mercon V ATF is the recommended Fluid for automatic and manual transmissions, and the Motorcraft FT114 is the recommended filter for the automatic transmission. Regularly changing the Fluid and filter according to manufacturer recommendations helps to prevent potential transmission issues.

Differential Fluid for 7.3L Powerstroke

The differential Fluid in your 7.3L Powerstroke is responsible for lubricating the differential gears and bearings, which helps prevent wear and damage. The Dana 80 and Dana 135 differentials require 75W90 or 80W90 gear oil, while the Dana 50 and Dana 60 differentials require 80W90 gear oil. Following the manufacturer’s recommendations for the correct fluid type and changing it at recommended intervals is essential for maintaining the health of the differential.


In conclusion, maintaining your 7.3L Powerstroke engine with the recommended OEM parts, filters, and fluids ensures longevity and performance. Following the maintenance schedule and using the right products can avoid costly repairs and breakdowns.

Investing in high-quality products like Motorcraft, Shell Rotella, and Lucas Oil can provide peace of mind and help you get the most out of your Powerstroke engine. Always consult your owner’s manual and follow the manufacturer’s recommendations for maintenance and replacement intervals. With proper care, your 7.3L Powerstroke can keep running strong for years.

Following the proper oil change interval for your 7.3 Powerstroke engine is essential for maintaining its performance and longevity. To learn more about other engines and their maintenance, check out our articles on the Ford Barra Engine, the 2JZ-GTE engine, and our comprehensive guide on popular Ford engine swaps.

Dmitry Petrov

Dmitry Petrov is an engineer who specializes in materials science, and has a deep passion for all things related to automotive technology. He is a true motorhead at heart, and spends much of his free time tinkering with engines and studying vehicular dynamics.


Submit a Comment

Your email address will not be published. Required fields are marked *

Popular Ford Engine Swaps: A Comprehensive Guide

Popular Ford Engine Swaps: A Comprehensive Guide

If you are an automotive enthusiast looking to upgrade the performance of your Ford vehicle, engine swaps can be a great way to achieve that goal. Replacing the stock engine with a more powerful one can increase horsepower and torque, improve acceleration, and enhance...