Amsoil 15min Flush.
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My approach to this - the one and only time I did it back on Dec.30th - is that longer exposure time should equal better results.
I started with a cold (room temp) engine, started it and added the flush solvent (it wasn't Amsoil), idled for 15 - 20 minutes. Then shut it off and let it sit for 30 minutes or so to let it cool some. During the 30 minutes quiet period, the deposits are exposed to the cleaning solvent for that additional 30 minutes. Then I did the same thing all over again : idle for about 15 minutes, then off for another 30 minutes or so until the temp gage dropped down. Then a final idle/fast idle for another 15 minutes, then dump the whole thing. All in all, I think the engine saw the solvent for around 2 hours, of which 45 minutes was intermittent idling time.
After all that, I filled with cheap dino oil ( $8 for 4 quarts) and ran it for around 200 miles as a "post flush" to get all the contaminated oil/solvent out, then dumped that and changed the filter and started with the final fresh oil.
I trust Amsoil and their recommendations. But 15 minutes is not a long time for a solvent with a final concentration of only 5% or 6% in the oil. Hence my modified procedure.
I started with a cold (room temp) engine, started it and added the flush solvent (it wasn't Amsoil), idled for 15 - 20 minutes. Then shut it off and let it sit for 30 minutes or so to let it cool some. During the 30 minutes quiet period, the deposits are exposed to the cleaning solvent for that additional 30 minutes. Then I did the same thing all over again : idle for about 15 minutes, then off for another 30 minutes or so until the temp gage dropped down. Then a final idle/fast idle for another 15 minutes, then dump the whole thing. All in all, I think the engine saw the solvent for around 2 hours, of which 45 minutes was intermittent idling time.
After all that, I filled with cheap dino oil ( $8 for 4 quarts) and ran it for around 200 miles as a "post flush" to get all the contaminated oil/solvent out, then dumped that and changed the filter and started with the final fresh oil.
I trust Amsoil and their recommendations. But 15 minutes is not a long time for a solvent with a final concentration of only 5% or 6% in the oil. Hence my modified procedure.
I have used the Amsoil flush at 2000 rpm's for 30 minutes with no problems. When you are not driving the car, it is not loading the bearings and should not harm anything. The 30 minutes was for a car with cold engine in cold weather. With a hot engine in warm weather, 15 minutes would probably be just fine. But get the idle up to at least 1500 rpm's, or you won't clean much, IMO. In really dirty engines that have very dirty oil, I would get some inexpensive oil and filter to do the flush with. I have had to go this way on several neglected engines.
Amsoil flush is for gooey sludge. If you have hard crusted on sludge then the Amsoil Flush is not the right thing for you, better to use AutoRx. I would not exceed the directions, while you might not notice any harm, the directions are there for a reason and it might take an engine tear down to determine any excessive wear.
would this flush be ok for turbo charged applications? I havent done a flush before because I am worried about the oil lines feeding the turbo getting plugged up or not having enough viscosity in the oil to protect the turbo.
It wouldn't hurt anything with a turbo. Again, it's at idle, under no load, so you're not going to be using your turbo much, if at all.
I really dont think I would need a flush for my 2.4l turbo. It only has 40k miles and has only used Amsoil, Redline, and GC since 3k miles on the motor. M1 from 500 to 3k miles. filters have been K&N HP golds, and Amsoil filters
i was just curious about using in a turbo
i was just curious about using in a turbo
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Originally Posted By: Dyoel182
The manual should tell you not to use any additives because of the turbo so that should tell you something.
I'm curious.. GM says the same bout all their motors.. but I bet you there has been auto rx'd and flushed by some on this board. Does that mean auto rx or any additives should not be used on any GM motor?
Manuals are designed to keep the manufacturer out of lawsuits.
I would recommend in this scenario to maybe contact Amsoil directly asking bout their applications on a turbo'd vehicle. ( and maybe let us know what they say so we can share )
The manual should tell you not to use any additives because of the turbo so that should tell you something.
I'm curious.. GM says the same bout all their motors.. but I bet you there has been auto rx'd and flushed by some on this board. Does that mean auto rx or any additives should not be used on any GM motor?
Manuals are designed to keep the manufacturer out of lawsuits.
I would recommend in this scenario to maybe contact Amsoil directly asking bout their applications on a turbo'd vehicle. ( and maybe let us know what they say so we can share )
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I wouldn't think that the turbo issue is going to create any issues if you aren't driving the vehicle like your are not to do.
The turbo could cause issues if it got up to operating temps, or was making boost, but if the car is at idle or high idle, I dont feel its doing enough to generate high temps to really cause any issues with an additive to the oil.
The turbo could cause issues if it got up to operating temps, or was making boost, but if the car is at idle or high idle, I dont feel its doing enough to generate high temps to really cause any issues with an additive to the oil.
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