: It uses HEUI (Hydraulically Actuated Electronically Controlled Unit Injection), which relies on high-pressure engine oil to fire the fuel injectors.
: Because it uses oil to actuate injectors, maintaining fresh oil with the correct viscosity is critical for performance and fuel economy. Buyer's Recommendations often reaching over 400
Produced between 1994.5 and 2003, the 7.3L Powerstroke is widely regarded as one of the most durable diesel engines ever built, often reaching over 400,000 miles with proper care. often reaching over 400
: Essential for the HEUI system; leaks or internal wear will directly impact engine performance. often reaching over 400