Name: Engine Oil Treatment KROIL Kreen Gas & Oil 1.25L 4 Pack
Brand: Kroil
SKU: 3GYC24QRDDT4
Availability: OutOfStock
Rating: 5 (12 reviews)

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Engine Oil Treatment KROIL Kreen Gas & Oil 1.25L 4 Pack

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Key Features: - Restores engine power by removing carbon deposits and sludge buildup to improve compression in both gasoline and diesel engines. - Reduces oil consumption by dissolving sludge and varnish, cleaning oil lines, and reconditioning old seals for enhanced engine performance. - Cleans fuel injectors and fuel systems by dissolving gum, sludge, and varnish buildup, ensuring smooth and efficient combustion. - Improves fuel efficiency and supports long-term engine maintenance for all vehicles through regular use. - Dual-action formula works as both an engine oil treatment and a fuel system additive for comprehensive engine care. Fact Sheet: - Brand: KROIL - Product: Kreen All-in-One Gas & Oil Treatment - Type: Engine oil treatment and fuel system additive - Compatibility: Gasoline and diesel engines - Volume per can: 1 quart (946 ml) - Pack size: 4 cans - Origin: Made in the USA - Compliance: VOC compliant in all 50 states Description: Kroil Kreen All-in-One Gas & Oil Treatment is a powerful additive designed to restore engine performance, improve fuel efficiency, and extend engine life. Its advanced low-viscosity formula penetrates deeply into engine components to remove carbon deposits, dissolve sludge, and clean valve stems, piston grooves, and oil passages. This comprehensive cleaning action helps restore lost compression and power in both gasoline and diesel engines. When added to engine oil, Kreen cleans the crankcase, oil lines, and seals, reducing oil consumption and helping to recondition older engines for improved reliability and performance. As a fuel additive, it cleans injectors, fuel systems, and combustion chambers, dissolving gum, sludge, and varnish buildup to promote smoother and more efficient combustion. Regular use of Kreen enhances mileage, reduces engine wear, and supports long-term engine maintenance, making it an essential treatment for maintaining a cleaner, smoother-running engine. Trusted by professionals since 1939, Kreen is engineered to deliver consistent, measurable results and is VOC compliant across all states. This dual-action treatment is suitable for all vehicles running on gasoline or diesel, providing a comprehensive solution to common engine issues caused by deposits and sludge buildup. Keep your engine running like new with Kroil Kreen All-in-One Gas & Oil Treatment.

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I have a 2013 ford transit connect that I bought used and it was abused. It sounded like junk and idled all over the place and didn’t shift properly. After putting 12oz. In the gas one time it tamed the erratic idle and made the engine perform way better. After fixing a few things and and cleaning the throttle body I put some in the oil and in the gas and it really brought the van back to life. So now I put it in all of my high mileage vehicles and the first time is the best most instant improvement in performance

Miracle in a bottle

kroil

Simply put? Miracle in a can. I use KREEN on every single internal combustion engine that passes through my home shop. I've lost count just how many engines and implements that I've resurrected with this fabulous fluid. It's like a carburetor rebuild in a can. Fill the carb with straight KREEN, leave overnight, fire up in the morning, and almost always have radical results. I take donated lawn/garden/snow/etc. equipment, refurb, and donate to someone that really needs it. The entire line of KROIL products has made this an easier and happier life project. HUZZAH!

Capital F Fabulous product!

[This review was collected as part of a promotion.] Bought an old car (1982 model) that had been sitting for awhile. Drained the old gas and put in fresh but still ran erratically. Gummed up carburetor? Ran a few tanks of gas with Kreen gas treatment and now runs much better. Cheaper than a carburetor rebuild.

Cleaned the carburetor

My kids have an older car, and it wouldn't pass emissions.  I added Kreen to the gas tank, drove it a day or so, then went through emissions.  The car passed with flying colors, and I didn't have to pay for any expensive repairs !!!  I will be using Kreen on all our vehicles.

Saved us money

I have been an automotive machinist for over 50 years. I first started using Kreen over 30 years ago. I have personally seen this product REPEATEDLY free stuck piston rings (oil & compression rings) which is a widely overlooked problem. Particularly in high-mileage engines that have not had proper oil changes done or engines that have been stored for lengthy periods.

Best internal engine cleaner you can buy !

My vehicle has over 200k miles on it, so I thought I'd try some Kreen. I've been a fan of Kano products for some time now  and I wasn't disappointed.
After pouring it in the motor and running it for a bit, I drained what should have been the oil, but was more sludge than anything. Needless to say my truck runs better than ever.

Engine Restoration

i've seen and done amazing and almost impossible carbon removal on internal automotive engines.  Hard, old carbon with this product came off like magic leaving the part looking like fresh out of box new.  .I just wish it was more easily obtainable~!

Ultimate carbon remover

I now use it in my diesel tractor, gas atv, lawn mower and wood splitter. I have no official testing metrics but everything seems to run smoother with the stuff.

Good stuff

I tried the Kreen in my old Ford that's had a tick for a few years. I'd assumed it was cam phasers or generally a Ford sound. 
Ran it for a day, then changed the oil - TICK GONE 
I'm still just amazed! Truck is running Super Nice!

Could it be this good ??!

I bought first 1 qt and after using and seeing the results I have bought in  4  one qts containers and then in gallon  jugs

Good product