My 7.3 Diesel

[Bduck]

As time goes on, I'm learning more about what I can do or needs to be done on my truck engine whether its a mod or just maintenance upkeep. I found a couple of more mods and will post as I get to them. But 1 thing that needs my attention now is the HPOP-high press oil pump. I knew it was tied into the main oil system thinking when an oil change gets done this would affect the oil within this area too. Not so much the case. The HPOP supplies oil to the fuel injectors holding a quart in each tube on both sides of engine. The HPOP itself has its own reservoir holds a quart of oil too. When servicing the HPOP, overservicing will not happen as oil will drain down into the main engine. An oil change done requires 15qts of oil but whenever I take it to have it serviced there is no mention from shop the remaining 3qts that's in the HPOP & injector tubing doesn't get replaced. Engine oil doesn't exchange with HPOP oil hardly only a very little. Injector life is being compromised with old oil and at 200K miles I have never changed oil before in the HPOP system. Today that will be changed before it sends an astronomical bill of possibly $5G for injector replacement.