amsoil engine flush or auto-rx

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Just trying to compare the two products and benefits. Has anyone done both? I am currently running auto-rx flush on a 100,000 mile dodge. Just curious about the two products.
 
My understanding is that Auto Rx is a really good, slow cleaner that rocks. AMSOIL's flush is mostly used to just do a fast but safe flush, as in get all the acidic oil and any other easily flushed contaminates out in the twenty minutes you are suppose to run it in your engine at idle. It basically does that so that the synthetic oil you are putting in doesn't have to work as hard at first to start cleaning the engine. If you have a dirty engine then RX is the way to go.

Is that right guys?
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Which vehicle are you speaking of on this clean? I am not a fan of using certain chemicals in oil fired injectors. Specifics please.

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I looking to use amsoil or auto-rx in my 7.3l psd to flush out some insolubles and then run a longer interval on amsoil 15W40. My used oil analysis results are posted in the used oil analysis section.

Sorry about the confusion on vehicles, currently in process of using auto-rx on dodge and trying to figure out what to do on my 7.3l psd.

Sean

[ January 06, 2004, 07:46 PM: Message edited by: flynavydiesel ]
 
I was suspecting you were going to use this on your PSD. I have done my 95 twice, in fact I just finished the second clean. I did my 01 when it had 1500 miles on it. The Auto-Rx has no adverse effect on the HEUI injectors, in fact that is why I used it. With a HPOP that can pressurize the system up to 3000 PSI the Auto-Rx is safe and effective.
Now, lets look at reality, when you change the oil on a PSD you leave a minimum of 1 quart of oil in the system. It is left in the high pressure oil pump. If you leave a quick flush in you will have one quart of oil with flush in it. If you use the Auto-Rx, you will still leave that quart of oil, but it contains esters that have good AW properties also.
Again just my experience with this engine.

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Vetteran,

Thanks for your info on this subject. I will use the auto-rx then follow with a 2,000 mile rinse cycle and then refill with amsoil and go the distance. Just out of curiosity what type of oil filter do you use?

Sean
 
The Amsoil flush will thin out the host oil by about one SAE grade, so if you start with 15w40 you'll have a 10w30 in there for the flush cycle. One quart of old oil out of fifteen qts is approx 7%, and 7% of 32 ounces is 2.24 ounces of flush in a 15 qt system. This small amount of engine flush - which is about 40% kerosene - will evaporate out on your first extended highway drive. I've used the stuff for over twenty years and it actually works pretty well. I run the engine @ two times the normal idle speed for a full 30 minutes; then change the oil and filter again ....

The AutoRX is a 7 cst, 20wt oil @ 100C, so it will also thin out the host oil a bit, based on personal experience in my Audi 100. AutoRX does have excellent lubricating properties and is more effective for a really dirty engine. If you're not in any hurry, I'd use the AutoRX.

[ January 06, 2004, 08:11 PM: Message edited by: TooSlick ]
 
quote:

Originally posted by Rat407:
AMSOIL's flush is ... easily flushed contaminates out in the twenty minutes you are suppose to run it in your engine at idle.

You drain all your oil, and run the engine with nothing but the amsoil cleaner inside it? That seems supremely unwise. You'd have metal rubbing against metal.
 
1) change just the oil filter, which will reduce the oil level and provide better filtration of contaminents loosened up by the flush ...

2) add one pint of flush for every 5-6 qts of sump capacity ...

3) fast idle the engine, at two times the normal idle speed for 30 minutes...I use a piece of cordwood or a brick on the gas pedal to get the right rpms on the tach

4) drain the oil/cleaner and change the oil filter again, and install the new oil ....
 
quote:

Originally posted by flynavydiesel:
Vetteran,

Thanks for your info on this subject. I will use the auto-rx then follow with a 2,000 mile rinse cycle and then refill with amsoil and go the distance. Just out of curiosity what type of oil filter do you use?

Sean


I use the Motorcraft #1995 in both trucks. I have a Gulf Coast 01 Bypass on my 95 and a Frantz on my 2001. I will be installing a Gulf Coast 01 on my 2001 later this year.

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batterycar - who told you to use Amsoil flush with no host oil??? That is wrong, don't follow their advice. I'm sure you didn't read that here!


I agree with TS.

I have written up a cleaning procedure for using both AutoRx AND Amsoil flush, but it really is for extremely dirty, foul engines. At 100K, I bet AutoRx alone will work fine for you.
 
Pablo,

Noob question: Where is this Auto-Rx/Amsoil flush procedure? Can you post it or provide a link?

Thanks!
 
Sorry if there was a missunderstanding. I'm so use to thinking that everyone has a basic knowledge of what to do, when in fact I need to explain better so that what I try to say is better understood. Does that make sense?

Anyway as stated above. You would get a new oil filter, take your old oil filter off, install the new filter. This will lower the level in the oil system so that you don't over fill when you add either the AMSOIL Flush or the Auto-Rx.

Now with the AMSOIL flush added to the old oil and clean filter you do as described above and fast idle twice what the normal idle speed is for 30 min. TooSlick is the MAN! Then after the 30 min run, shut down the engine, drain the oil and remove the filter, install new filter and new oil and your done.
Now with the Auto-Rx you would leave that in the old oil for an additional 1500 miles, then change the oil and new filter that you installed when you put the Auto-Rx in, (which is now old and holding what the RX cleaned up), put a new filter on, and new oil and run as rinse for 2k. Better to go to www.auto-rx.com and read the instructions exactly for your application. That way you got it covered 100%.

How is that? Did I mess up again? I never was one to write directions. I'm better at hands on instructions. I do most of that at work with the new young Airman that come into the Air Force. We get the Technical Order out and I have them follow it while I show them step by step. Much easier. I don't envy anyone that has to write direction manuals. Not easy or fun.
 
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