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Old 03-22-2012, 08:34 PM
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dumb hpop question

Is the oil that I change in my truck the same oil that runs the hpop?
Don't know much about it apparently and I am trying to service everything on this new to me truck. I have had it about 4 months and 4000 miles now. New fuel filter, oil filter and oil, 6637, front end parts, exhaust, chip. Hpop is something I had never even heard of until I bought this truck. Thanks for the help guys.
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Old 03-22-2012, 08:40 PM
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Yes it is. The HPOP Res is fed from the LPOP. HPOP takes the oil from the HPOP Res and runs it through the rails/heads.injectors. It all returns back to the oil pan eventually.
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Old 03-22-2012, 10:16 PM
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Originally Posted by ToMang07 View Post
Yes it is. The HPOP Res is fed from the LPOP. HPOP takes the oil from the HPOP Res and runs it through the rails/heads.injectors. It all returns back to the oil pan eventually.
This exactly. Don't listen to that powerstroke help idiot.


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Old 03-23-2012, 09:09 PM
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Originally Posted by 01Crewcab7.3 View Post
This exactly. Don't listen to that powerstroke help idiot.


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Doesnt hurt to suck it out and put clean oil in there once in awhile just to make sure. It isnt that much but still up to 1/2 gallon of dirty oil still left in the engine after an oil change since it doesnt return to the pan when the truck is off.
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Old 03-24-2012, 07:35 AM
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Quote:
Originally Posted by Fordman247365 View Post
Doesnt hurt to suck it out and put clean oil in there once in awhile just to make sure. It isnt that much but still up to 1/2 gallon of dirty oil still left in the engine after an oil change since it doesnt return to the pan when the truck is off.
Changing the oil in the HPOP Res is like changing the air in your tires. Sure, won't hurt.... but it's a huge waste of time.
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Old 03-24-2012, 08:39 AM
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The only time its good to change your hpop oil is if you drain the main pan and the hpop resivoir at the same time. Otherwise you put 14 fresh quarts in with 2 dirty qts. ideally you would have 15 fresh qts if you did both on a oil change.

No big deal tho...

I did however try changing the hpop once to do a test. I drained the resivoir then topped it up with fresh clean oil. Started the truck for 5 seconds then pulled some out.....it was already pitch black like my old oil.....it obviously gets mixed in quick
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Old 03-24-2012, 03:36 PM
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Like I said, once a year or so I do a 'complete' oil change. No it wont make much difference, but when you pull the drain plug on the oil pan you let it all run out dont you? Same applies, once a year I pull the hpop oil and change it too.
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Old 03-24-2012, 03:39 PM
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Originally Posted by Nitro41 View Post
The only time its good to change your hpop oil is if you drain the main pan and the hpop resivoir at the same time. Otherwise you put 14 fresh quarts in with 2 dirty qts. ideally you would have 15 fresh qts if you did both on a oil change.

No big deal tho...

I did however try changing the hpop once to do a test. I drained the resivoir then topped it up with fresh clean oil. Started the truck for 5 seconds then pulled some out.....it was already pitch black like my old oil.....it obviously gets mixed in quick
Hmm, that's a decent test. I've always laughed off changing the HPOP reservoir oil but really haven't done any testing of it. Some people will swear by it. I still think it's a rather big waste of time.
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Old 03-24-2012, 03:45 PM
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Originally Posted by ToMang07 View Post
Changing the oil in the HPOP Res is like changing the air in your tires. Sure, won't hurt.... but it's a huge waste of time.
If you ever change your hpop and drain your resevoir,you will see all the sludge in there and you will start changing yours every one and a while to.
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Old 03-24-2012, 03:49 PM
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It will always be one of those opinion things. Yes the reservoir oil does return to the pan, and, its a half gallon of dirty oil. Opinion or not, I dont care, I change mine once a year
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