Good clean oil is extremely important to a 7.3L. Moreso than for most other engines. That's because the oil is used differently than with most other engines. The 7.3L injection system is more like a hydraulic system. It's used to fire the injectors under very high pressure. Engine oil is not hydraulic oil, it wasn't designed to take the type of abuse and shearing hydraulic systems put on it, so keeping up on your oil maintenance is key. What most don't know is that not every 7.3L Powerstroke has the same level of oil filtration built in.

The first years of the 7.3L Powerstroke used different High Pressure Oil Pump (HPOP) reservoirs than the later model engines, more importantly, they had different gaskets. Around late 2000 (more on the exact years impacted below), International started adding a screen to the gasket between the front cover and the HPOP. This screen filters oil from the Low Pressure Oil Pump (LPOP) before it goes into the HPOP, injectors, IPR valve and more, ensuring a good clean supply of oil to be used to run the engine. Without the screen, such as in 2000 and prior year engines, the LPOP is pumping unfiltered oil from the pan, directly into the most sensitive parts.

As the 7.3 matured, International did adjust some things. They learned as all manufacturers do, and applied their findings to better the engine. This screen-equipped gasket is one of the bigger ones. With the implementation of the screen filter, we saw a noticeable decline in several failures. IPR contamination was reduced. HPOP and injector failures were also reduced. International's screen filter fix worked amazingly well.

We should note that while prior to 2000 all 7.3's did not come with a screen, some 2000 model year engines did have this screen, and many did not. Those built later in the year seemed to have the screens, although we have seen exceptions. All you can do is check.

It's also important to note that you cannot simply take a 2001-2003 gasket and put it in your earlier engine. Differences in machining will not allow the gasket to fit correctly, leading to potential reservoir and timing cover cracks when the wrong gasket is used. If the timing cover cracks, the only way to fix it is to remove the engine from the truck.

The fix? You know we have one, and it's our Patent Pending HPOP Billet Mini Reservoir Spacer. 

The Riffraff Diesel HPOP Billet Reservoir Spacer bolts between the HPOP reservoir and the front cover, allowing for the use of a 2001-2003 gasket equipped with the screen filter. Two models of the mini spacer are available, one for the 1994-1995 and another for the 1996-2000 trucks. For 1996-2000 another option is available in the form of a large capacity spacer for those who want a larger supply of oil available for the HPOP, plus the filtration. All are made from 6061-T6 Billet Aluminum and come anodized in your pick of several different colors. Motorcraft gaskets are included, as well as custom-coated longer mounting bolts. 100% Made In The USA.

Check Them Out!

1994-1995 HPOP Billet Mini Reservoir Spacer

1996-2000 HPOP Billet Mini Reservoir Spacer

HPOP Large Capacity Billet Reservoir Spacer 2.0

***Disclaimer: The information provided on this blog is for informational purposes only. We share our knowledge and experience, but we are not liable for any damages, injuries, or losses that may occur as a result of using this information. Situations are rarely cut and dry in the automotive world. Your situation will likely be somewhat different than what we describe here.  Use your best judgment and always consult a qualified professional for automotive repairs and modifications. Your safety is your responsibility.