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woody01234 11-17-2011 02:57 PM


Originally Posted by mac300 (Post 820505)
What I can say about flushing the upper reservoir is I don't think the oil in the crank case is circulating to the upper reservoir very effectively. The oil in the crankcase was recently changed and new looking. The oil I pulled out of the reservoir was black and thick. All I can say is after draining and adding a quart of oil to the reservoir and running the engine for 10 min to circulate the oil in the heads. And repeating this two more times the oil in the reservoir was significantly clearer. I'm not a rocket scientist but the way I see it thats got to be better for your injectors.

I have done the same thing. After an oil change, the oil in the HPOP remains dirty for an extended period of time. Since the HPOP has some extremely high pressures, it is reason to believe that it has very low volume. I have not attempted the WOT approach yet though.

My approach was taken from another site:
1. Drain HPOP
2. Top off with oil
3. Run engine for a couple of minutes
4. Drain HPOP
5. Top off with Duralube
6. Run engine for a couple of minutes
7. Drain HPOP
8. Top off with Duralube
9. Run engine for a couple of minutes

It may seem excessive, but it makes me feel better. Plus hitting the injectors directly with the Duralube should help with longevity.:humm:

fordornothing 11-17-2011 05:37 PM

it is a excessive waste of time.... but do as you wish.

CSIPSD 11-17-2011 08:40 PM


Originally Posted by woody01234 (Post 821625)
I have done the same thing. After an oil change, the oil in the HPOP remains dirty for an extended period of time. Since the HPOP has some extremely high pressures, it is reason to believe that it has very low volume. I have not attempted the WOT approach yet though.

My approach was taken from another site:
1. Drain HPOP Mmmm Air in to the injectors, thats great for them...
2. Top off with oil
3. Run engine for a couple of minutes
4. Drain HPOP Mmmmm more air in the system... really good for the injectors...
5. Top off with Duralube
6. Run engine for a couple of minutes
7. Drain HPOP Mmmm EVEN MORE AIR in the HPO system... Your killing your injectors you know that right?
8. Top off with Duralube
9. Run engine for a couple of minutes

It may seem excessive, but it makes me feel better. Plus hitting the injectors directly with the Duralube should help with longevity.:humm:

Excessive? How about harmful.

Please DO NOT DO THIS PEOPLE.

woody01234 11-18-2011 09:39 AM

How would air be getting introduced to the injectors?

You top off the HPOP, not the crank case.

The volume of oil passing through the HPOP is not very much.

95powersmoker 11-18-2011 09:46 AM


Originally Posted by woody01234 (Post 821915)
How would air be getting introduced to the injectors?

You top off the HPOP, not the crank case.

The volume of oil passing through the HPOP is not very much.

Ever ran your truck with the valve covers off to watch the oil coming from the injector spouts?

I can tell you that it doesn't take very long to put a quart of oil on the ground if your truck isn't sitting flat or nose downhill a little...

Sure it isn't very much, but it adds up quickly...

fordornothing 11-19-2011 08:30 PM

just because there is a guy out the on the org that says change the HPO doesn't mean it's true. are you sure he knows what he's talking about?


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