Got a stupid question
Cargo Master
Joined: Jul 2010
Posts: 3,014
Likes: 115
I wouldn't worry about it if I were you. It's part of the regular circulation, and you're putting 4 new gallons of oil in at every oil change. It just seems like a waste of time to me. I guess it couldn't hurt, though.
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Don't worry about it unless you're worried about some kind of oil contamination for some reason. The HPOP oil comes from the crankcase and will "change itself" the first time you run the truck. The only reasons I see for changing it would be
1- You're worried about contamination for some reason (like running ATF instead of oil)
2- You are switching from conventional to synthetic
3- You're a big fan of PowerstrokeHelp.com
1- You're worried about contamination for some reason (like running ATF instead of oil)
2- You are switching from conventional to synthetic
3- You're a big fan of PowerstrokeHelp.com
Logistics Pro
Joined: Oct 2008
Posts: 4,818
Likes: 1
From: Avilla, IN
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Senior User
Joined: Oct 2010
Posts: 264
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Ok im not worried about any of that stuff so, i just wont worry about.
i just had seen it posted on hear and thought i would ask
i just had seen it posted on hear and thought i would ask
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Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
The HPOP res feeds the injectors which dump back onto the top of the heads and then drain into the crankcase. There is an oil port off the LowPOP (in the pan) that pumps oil back up into the HPOP res while the engine is running. There can be things that happen that allow the HPOP res to slowly run dry while the truck is sitting, or a low oil level in the pan can cause the HPOP res to go dry, which pretty much shuts down the engine.
But in so far as maintenance goes, there isn't really any need to drain it when you do an oil change.
The PowerstrokeHelp.com reference is just a poke at our buddy Bill who spins all kinds of tails about what needs to be done "to maintain the structural integrity of your Powerstroke engine". He used to advocate changing the HPOP oil, saying it was necessary, but it's really a waste of time.
It's not a stupid question though since there is some guy with a ton of YouTube videos who talks like he knows what he is talking about advocating it. It's just that once you understand how the system works, you realize it isn't really necessary unless you want every last drop of oil out of the engine.
Here is some reading on the fuel and oil systems in these engines if you care to learn more.
But in so far as maintenance goes, there isn't really any need to drain it when you do an oil change.
The PowerstrokeHelp.com reference is just a poke at our buddy Bill who spins all kinds of tails about what needs to be done "to maintain the structural integrity of your Powerstroke engine". He used to advocate changing the HPOP oil, saying it was necessary, but it's really a waste of time.
It's not a stupid question though since there is some guy with a ton of YouTube videos who talks like he knows what he is talking about advocating it. It's just that once you understand how the system works, you realize it isn't really necessary unless you want every last drop of oil out of the engine.
Here is some reading on the fuel and oil systems in these engines if you care to learn more.
Hotshot
Joined: Jul 2003
Posts: 12,177
Likes: 40
From: Newport, WA
That's pretty good! 
but I thought there was one that just said "CHANGER YER HPOP OIL!!!"
Phil- yes my avatar is my new truck. 97 with a 5 speed in it. I found it in the Seattle area on Craigslist and paid a pretty penny for it.
but I thought there was one that just said "CHANGER YER HPOP OIL!!!"Phil- yes my avatar is my new truck. 97 with a 5 speed in it. I found it in the Seattle area on Craigslist and paid a pretty penny for it.
Fleet Owner
Joined: Aug 2004
Posts: 20,419
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From: AZ
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
It would probably be in worse condition!