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#3297581 - 02/28/14 05:10 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: SteveSRT8]
strat81 Offline


Registered: 01/09/10
Posts: 809
Loc: Nebraska
Originally Posted By: SteveSRT8

make sure you use the Kreen in both the gas and the oil as recommended on the can.

Judging from your story some of the noise you were hearing was carbon knock, the ITU knocked some of it out for a quieter engine. Carbon knock is often confused with piston slap and can seem very similar...


I added Kreen to both oil and gas, as per the directions. What benefit does it have in the fuel tank that I would not see from regular use of Techron or BG 44K?

With the cold weather we've had lately, it seems a bit quieter at cold start than it did prior.
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#3297944 - 03/01/14 05:24 AM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: strat81]
SteveSRT8 Online   content


Registered: 10/10/08
Posts: 15135
Loc: Sunny Florida
Originally Posted By: strat81
Originally Posted By: SteveSRT8

make sure you use the Kreen in both the gas and the oil as recommended on the can.

Judging from your story some of the noise you were hearing was carbon knock, the ITU knocked some of it out for a quieter engine. Carbon knock is often confused with piston slap and can seem very similar...


I added Kreen to both oil and gas, as per the directions. What benefit does it have in the fuel tank that I would not see from regular use of Techron or BG 44K?

With the cold weather we've had lately, it seems a bit quieter at cold start than it did prior.


In our fleet trucks we get carbon build up in the cylinder head. It is a well known issue in engines that are not revved up and wound out regularly. Since we rarely do that sort of thing in a 9000 pound vehicle we suffer a noise that can sound remarkably like piston slap, but is actually carbon deposits.

Kreen easily removes carbon and is highly effective if you need it. It also vaporizes out through the PCV system and can clean the intake and so forth downstream.

But due to the nature of the product it is used in many hopeless cases as a last resort. Thus it is not always an appropriate choice for your particular issue.

I've said this here before, with millions of different vehicles driven in millions of different duty cycles by millions of completely different owners there will always be a few of us with unique problems that may be addressed with additives...
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#3299084 - 03/02/14 11:00 AM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
chrly919 Offline


Registered: 01/11/13
Posts: 16
Loc: Tennessee
I have a 2004 Jeep Grand Cherokee with the 4.7 engine , 140k, with the same issue. Uses a quart about every 500-700 miles. I've used Maxlife 10w40 in it for several years. I would have thought that would help. Haven't tried any additives, although I have used Seafoam in other vehicles for carbon issues.
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#3309069 - 03/12/14 08:03 AM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
deanm11 Offline


Registered: 12/17/11
Posts: 61
Loc: Northern NJ
I am now finally in the observation phase- that is observing to see if consumption has improved. I had put the Kreen in with the existing oil so I have relatively fresh Rotella with no additives, a few hundred miles in. I am observing the dipstick level after the car has sat for at least 6 hours.. Probably 200 miles into it and no material move on the level. I believe the operating range on the dipstick is near a quart. I'd be very satisfied if the level moves 25% or less than the operating range in 500 miles- that would imply improvement to >=2000mi/quart.

There is one significant flaw in my test, I am sorry to report. I had just begun to see a bit of oil on the garage floor. I don't recall it when we first took over the vehicle in November and for a while I thought the oil was from when a different vehicle was in that garage slot. I finally determined I had a modest RH valve cover leak. I'm sure it had to be leaking more modestly at some point and just burning/not enough to hit the ground. So some consumption may have been from this.. that said, the heavy usage has been for a number of years, so my best guess is that this issue was at most 1/4 to 1/3 of my problem, but I can't be sure.

I changed the valve cover gasket over the weekend. There were a couple of gunky/sludgy spots in there. Sorry I didn't take pictures. Since I wasn't primarily responsible for the maintenance, there may have been a cycle or too of conventional oil to 10k+ miles.

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#3336199 - 04/07/14 07:36 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
deanm11 Offline


Registered: 12/17/11
Posts: 61
Loc: Northern NJ

So-so results as of late I think. Also hard to interpret with the valve cover leak issue. I bought a can of seafoam on sale that I am considering running into each of manifold, oil and fuel sometime soon and get PP in there. (still running the Rotella) From additional reading, I would consider trying GM top end cleaner that seems to have a good reputation.


Mar 1, 2014 158,661 miles
Mar 5, 2014 158,730 miles: Oil level ~75% operating range, just into upper cross-hatch
Mar 11, 2014 158,805 miles: Oil level ~70% oper. Range, just at beginning of upper cross-hatch
Mar 15, 2014 158,914 miles: 253 miles in. Oil level ~70% oper. Range, just at beginning of upper cross-hatch
Mar 21, 2014 159,018 miles: 357 miles in. Oil level ~60% oper. Range
Mar 25, 2014 159,128 miles: 467 miles in. Oil level ~55% oper. Range
Apr 6, 2014 159,354 miles: 693 miles in. Oil level ~35% oper. Range

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#3336930 - 04/08/14 03:11 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: strat81]
strat81 Offline


Registered: 01/09/10
Posts: 809
Loc: Nebraska
Originally Posted By: strat81
I added Kreen to both oil and gas, as per the directions.


Well, 1K miles and about 1 month later on my Rainier:
-Slightly less cold start noise
-Engine 'felt' like it wound spin easier. Deposits gone or thinning of the oil from the Kreen? All in my head?

And the not so good news:
-It apparently cleaned my rear main seal (or maybe the M1 0W-40 did?). What used to be a damp bell housing turned into a drip. Perhaps the RMS has been the source of my consumption?

Anyway, I changed the oil and filter. I put in Maxlife Blend 10W-40 along with some AT-205 ReSeal. Filter is a NAPA Silver. The 10W-40 has made the engine quiet. No piston slap at all. But, it's the thickest oil I've run in this thing, others being 5W-30 and 0W-40, which I'll still use during the cold weather.

Also threw a P0332 so it looks like the intake has to come off for new knock sensors (85k miles). I hate this car.


Edited by strat81 (04/08/14 03:19 PM)
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#3372422 - 05/15/14 11:38 AM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
Turk Offline


Registered: 02/03/06
Posts: 8020
Loc: MN
Hey deanm11,

What's the latest Kreen update??
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03 GMC Sierra 4x4 200k, M1 TDT
00 Saturn SL2 89 YO Lady Car. 79k Miles! PU
98 Saturn SC2 "Red Hot" PYB + LubeGard + Kreen
97 Camry 207k Maxlife


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#3429056 - 07/19/14 07:11 AM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: Turk]
Turk Offline


Registered: 02/03/06
Posts: 8020
Loc: MN
Originally Posted By: Turk
Hey deanm11,

What's the latest Kreen update??



Bump! Any update as I may be doing something this (like TODAY?) smile
_________________________
03 GMC Sierra 4x4 200k, M1 TDT
00 Saturn SL2 89 YO Lady Car. 79k Miles! PU
98 Saturn SC2 "Red Hot" PYB + LubeGard + Kreen
97 Camry 207k Maxlife


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#3470291 - 08/31/14 07:32 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: Turk]
deanm11 Offline


Registered: 12/17/11
Posts: 61
Loc: Northern NJ
Sorry for the delay.

I think I only got marginal results in the end. I think I am burning a quart/1000mi. This test was imprecise at best because of not having measured the consumption before. I just dumped the Rotella for 10w30 Pennzoil Platinum and will monitor again.

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#3471018 - 09/01/14 04:48 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
123Saab Offline


Registered: 10/27/10
Posts: 1315
Loc: PA
I have a bottle of Lubro-Moly Pro-Line Engine Flush that I haven used yet, Will use it for my next OC on my 03 Ranger.

I wonder if that could help with your situation?

I have a 3.7L in a Liberty as well, 08 model.

Uses no oil but then it has not yet broken 100K (97K ATM)

I run 5w-20 Valvoline maxlife in it and a bottle of Liqui-Moly Ceratec at the last OC.
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#3472844 - 09/03/14 12:41 PM Re: Kreen treatment plan on 2004 Liberty 3.7l burner [Re: deanm11]
sleddriver Offline


Registered: 02/06/10
Posts: 1809
Loc: Central Texas
Enjoyed reading your account. Sounds like you're frustrated with the results. I've used BG109 engine flush on the sled with good results, but I didn't have the oil comsumption problem you do.

You can search for it under my name and read up on my experience. Good luck!
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