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#2335157 - 08/02/11 12:03 PM Kreen piston soak experience.
friendly_jacek Offline


Registered: 05/04/03
Posts: 6541
Loc: southeast US
Some may remember that a month ago I did a monster 3-week MMO piston soak that worked well and stopped oil consumption in the last 2000 miles.

The pistons were 50% free of carbon right after the MMO soak, but are 100% covered by carbon again.

I decided to do Kreen soak right before next oil change. I used 1 oz Kreene in each cylinder and soaked for 12 hrs. 2 pistons had Kreen and 2 were dry after that. I added small amounts of Kreen to the dry cylinders (<10cc, don't know exactly as acetone in Kreen ate marks on the syringe I used) and I cranked the engine with plugs out. Then I put the plugs back and cranked with plugs in but disconnected. I let it seat overnight and started the engine in AM next day. The usual smoke show ensued (warning: burning Kreen smells nasty, unlike MMO). The car was driven lightly and spark plugs replaced in PM: 75% carbon on pistons gone.

Was planning to also add Kreen to oil, but I didn't as it was full and I didn't want to overfill.

I will do oil change tonight and find out what is hiding inside the oil filter.

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#2335166 - 08/02/11 12:15 PM Re: Kreen piston soak experience. [Re: friendly_jacek]
ltslimjim Offline


Registered: 08/06/10
Posts: 5505
Loc: WatUpDoc
Coffee2

Death to carbon!!! Can't wait, man. Will you open the filter? popcorn2
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#2335186 - 08/02/11 12:33 PM Re: Kreen piston soak experience. [Re: friendly_jacek]
demarpaint Offline


Registered: 07/03/05
Posts: 27540
Loc: NY
I wonder if feeding small amounts of hot water via a vacuum line while the engine is running would get you to 95% carbon free? Being careful not to hydro-lock the engine.
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#2335189 - 08/02/11 12:36 PM Re: Kreen piston soak experience. [Re: friendly_jacek]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 18315
Loc: Sunny Florida
Sounds like you need to tune that monster so it quits loading up!

Put Kreen in the oil. It works quickly and if you are all carboned up on the tops you know the rings are coked up as well.
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#2335201 - 08/02/11 12:45 PM Re: Kreen piston soak experience. [Re: friendly_jacek]
ltslimjim Offline


Registered: 08/06/10
Posts: 5505
Loc: WatUpDoc
^I'd seriously like to see what something like Power Foam would do prior to his subsequent followup OCI, just for comparison purposes, on top of that(a short kreen OCI). grin2

drive
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#2335281 - 08/02/11 01:54 PM Re: Kreen piston soak experience. [Re: demarpaint]
123Saab Offline


Registered: 10/27/10
Posts: 1382
Loc: PA
Originally Posted By: demarpaint
I wonder if feeding small amounts of hot water via a vacuum line while the engine is running would get you to 95% carbon free? Being careful not to hydro-lock the engine.


Well lots of Saab enthusiasts that really wring out their Turbo fours use water injection to cool the air coming from the turbo.

Side benefit is really clean cylinders/pistons.
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#2335295 - 08/02/11 02:16 PM Re: Kreen piston soak experience. [Re: demarpaint]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6541
Loc: southeast US
Originally Posted By: demarpaint
I wonder if feeding small amounts of hot water via a vacuum line while the engine is running would get you to 95% carbon free? Being careful not to hydro-lock the engine.


I'm really after the oil rings cleaning. Decarbon is a side effect, but to me it shows the strength of Kreen.

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#2335296 - 08/02/11 02:17 PM Re: Kreen piston soak experience. [Re: SteveSRT8]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6541
Loc: southeast US
Originally Posted By: SteveSRT8
Sounds like you need to tune that monster so it quits loading up!

Put Kreen in the oil. It works quickly and if you are all carboned up on the tops you know the rings are coked up as well.


Not sure why all that carbon. The fuel trims are reasonable and everything else is in the good shape. The ring coking is a known issue in older 1ZZ-FE.

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#2337279 - 08/04/11 10:56 AM Re: Kreen piston soak experience. [Re: friendly_jacek]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6541
Loc: southeast US
I changed oil last night and opened oil filter. More carbon particles than normally inside the filter (only 2000 miles on oil), but less compared to after MMO soak. I believe Kreen had fewer deposits to clean following the MMO soak. It was too dark to evaluate for sparkling metal particles inside oil filter (direct sun is great for that).

Now, I have Maxlife oil in and I hope oil consumption will be history in this car. If not, I have BG109 flush ready to use in the next oil change.

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#2337323 - 08/04/11 11:24 AM Re: Kreen piston soak experience. [Re: friendly_jacek]
ltslimjim Offline


Registered: 08/06/10
Posts: 5505
Loc: WatUpDoc
^I like your methods, keep us posted. You're probably close to as clean as you can be as far as soakings are concerned, though help yourself to more if you need to. grin Also, if consumptions goes down would you consider experimenting with a bottle of Lubro Moly MoS2? thumbsup
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#2337356 - 08/04/11 11:53 AM Re: Kreen piston soak experience. [Re: friendly_jacek]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 18315
Loc: Sunny Florida
Originally Posted By: friendly_jacek
Originally Posted By: SteveSRT8
Sounds like you need to tune that monster so it quits loading up!

Put Kreen in the oil. It works quickly and if you are all carboned up on the tops you know the rings are coked up as well.


Not sure why all that carbon. The fuel trims are reasonable and everything else is in the good shape. The ring coking is a known issue in older 1ZZ-FE.


Sounds as though it is set up pig rich for longevity. Mine is also.

BTW, rings have been coked up on everything I ever tore down but one motor. I feel it happens to almost anything with some miles on it.
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
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#2337450 - 08/04/11 01:36 PM Re: Kreen piston soak experience. [Re: friendly_jacek]
OldCowboy Offline


Registered: 05/28/11
Posts: 734
Loc: SW Missouri
Originally Posted By: friendly_jacek
I Now, I have Maxlife oil in and I hope oil consumption will be history in this car. If not, I have BG109 flush ready to use in the next oil change.


BG109..............Wasn't that a WWII German fighter? crackmeup

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#2337559 - 08/04/11 03:55 PM Re: Kreen piston soak experience. [Re: OldCowboy]
friendly_jacek Offline


Registered: 05/04/03
Posts: 6541
Loc: southeast US
I'm talking about this:


You probably mean Messerschmitt 109:

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