Engine flush - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 13 (permalink) Old 11-02-2010, 04:09 PM Thread Starter
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Engine flush

I have a 2000 7.3 with 137,000 miles. I change my oil every 5000 miles. I was thinking about flushing my engine out on the next oil change. Is that a good or bad idea? If i should, what should i use?
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post #2 of 13 (permalink) Old 11-02-2010, 04:18 PM
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If you have been good about changing your oil every 5K, then don't do it. With detergent oils it really isn't necessary. It was an ok idea in the days before oil filters and modern oils - we used to use kerosene - but I wouldn't do that to my 7.3 if you paid me..

2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM
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post #3 of 13 (permalink) Old 11-02-2010, 04:47 PM
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useing any kind of engine flush is like running the engine with out oil in my opinion. even though you cant run a powerstroke 7.3 with no oil. just stating an example. those engine flush things in my opinion can cause premature bearing wear and other problems.

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post #4 of 13 (permalink) Old 11-02-2010, 07:57 PM
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I used the amsoil engine flush and noticed a difference in idle and how it started up that was about a year ago I'm gona do it here again this weekend.

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post #5 of 13 (permalink) Old 11-02-2010, 08:25 PM
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Personally I would not bother. I think your asking for trouble. But thats me. The only engine flush I use and that would be on a gasser would be a quart of tranny fluid, but not in a diesel. Guess im old school

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post #6 of 13 (permalink) Old 11-02-2010, 11:55 PM
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I wouldn't do it, either. The only method of "flushing" I do to my diesels are very short oil change intervals. If I think the truck needs a flushing I will change the oil every 1k miles a couple of times and then resume normal OCI's. In all honesty, I'm not even sure that is necessary with regular oil and filter changes and modern oils.
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post #7 of 13 (permalink) Old 11-03-2010, 11:48 PM
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I think one of the reasons some people are reluctant to do an engine flush is the fact that most are solvent based.

AMSOIL's Engine Flush is a safe, detergent based formula that is safe on seals and gaskets. It is designed to be run with your oil, before you do a change.

Here is some more info, and before and after photos.

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post #8 of 13 (permalink) Old 11-04-2010, 06:17 AM
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KLo I used it like said before and it did make a difference I plan on doing it about once a year after I did it the first time the truck started like right now no cranking and it ran smoother but all that went away after about 5 or so oil changes. I would say it's doin something.

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post #9 of 13 (permalink) Old 11-05-2010, 12:08 AM
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Thanks, DJM. Good luck. You said you used it about a year ago. More than likely that was the older formula. The new 100% detergent based formula was released earlier this year in April 2010.

Please let me know if I can help you with anything.

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post #10 of 13 (permalink) Old 11-05-2010, 05:46 AM
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I still got some left that I'm gona use up when I change the oil in the morning how much is the engine flush going for now anyways?

2001 CC
DP F6 60eco,80tow,80eco,120
6" lift 37" toyos
AFE Big Boost
4" Exhaust
RiffRaff FRX
EV2 Guages
F650 Dash

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post #11 of 13 (permalink) Old 11-06-2010, 12:48 AM
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PM Sent.

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post #12 of 13 (permalink) Old 11-06-2010, 03:35 AM
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Auto-RX for me, a little expensive but worth it. Used the first cleaning at 156K miles, am on the second now. After the first one the oil is really clean still at 3500 miles on it. Engine seems to start and run better.

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post #13 of 13 (permalink) Old 12-04-2012, 10:41 AM
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Quote:
Originally Posted by Bill1013 View Post
Auto-RX for me, a little expensive but worth it. Used the first cleaning at 156K miles, am on the second now. After the first one the oil is really clean still at 3500 miles on it. Engine seems to start and run better.
Are you still using Auto-RX? If so, what are your thoughts after using it for so long and would you still recommend it. I just purchased a F-250 with a 7.3 and it has 146,000 miles on it. Was thinking about doing this cleaning to start things off the way I'd like to down the road after it's clean.
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