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Kroil, really?

There have been several comments made about "Kreen" manufactured by Kano Labs, but the discussions are closed now. I called Kano and they referred me to a local dealer. When I called the dealer he didn't know what I was talking about. I finally succeeded in getting him to order me some then overcharged me when it arrived.
I've been using Kreen since the early '80s, mostly in cars, so I have two anecdotal stories for you. First story involves a junk yard 389 Pontiac engine. We were trying to salvage as many parts as possible. I took a push rod that was almost black with carbon from years of neglect and cooked on motor oil. Several passes with Kreen on a shop rag and the rod came out looking like it had just been take out of the box new~!
Second was a set of injectors from an older high mileage GM engine which were black with burned on carbon and would not fire. We soaked them in Kreen overnight, rigged up a way to blow pressurized air through them, and fired them with a noid light. When installed in the motor, the engine fired on the first turn.
Yes, Kreen really attacks old built up carbon quite well~!!!
I use it every 3000 to 5000 in the gas tank of my 2006 Lincoln Town Car that shows 148,000 miles and has never had a tune-up. I'm an old guy who never drives very far and my Town Car gets 21.3 mpg just piddlin' around locally.
 
From the Kreen MSDS
1677790700446.png
It would take a serious chem lab to dissect that "proprietary" ingredient, but for the most part this is a mix of strong hydrocarbon solvents and hydrocarbons of unidentified molecular weights, with a spritz of TCP.

Since we are on the topic, here is the snapshot of Kano Kroil
1677790968918.png
As with the concept of most "penetrating oils", the basic idea is to have a surface tension that gets into capillary gaps that are on the molecular level, and also to be a solvent. In some contexts, the idea is to be a carrier for leaving behind a lubricant, in others it is to drag in a detergent effect.

Since combustion machinery often turns the fuel residues and oils into polymers and varnish like deposits along with carbon ash, organic solvents that are similar to gasoline and diesel are often effective. There is a similarity to the combustion products of nitrocellulose, so many of the same products used for engines tend to work on guns to some degree or another. No easy answers. YMMV
 
Just used it ( first time) .

Let it soak for 8 hours. Loosened up some real hard carbon. Swabbed bore

Cleanest bores been in a while.

Then with some JB Bore Paste. Even a little cleaner.
 

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