Powerstroke History Lesson
Now that the Duramax history lesson is complete(LINK), onto the Powerstroke starting with the one that started it all. The venerable 7.3L. I will update this as the rest of the engines get poste...
Forum Discussion
Wild Card wrote:larry barnhart wrote:
what about the 7.3 engines before the 2002 models that needed the coolant additive every 15000 miles to keep the engine from going bad. PF-15 I think before it became PF-22. Most ford folks I knew did not know it was needed.
chevman
7.3 ended production in 2003.5. I don't know about the 6.0 2003.5 up or the 7.3 IDI...but all 7.3,s required the additive in the coolant. It is more of a water softening agent to stop pitting in the aluminium which results in holes in the water jacket. Class 8 trucks have this and it is controlled via a coolant filter.
And it was a pain dealing with the coolant , and then replacing the coolant ,flushing etc. A lot to be said about the new coolants ,longevity etc .
