12121 The Engine Conditioner Qty(1)

Really makes the engine operate smoother. That’s the best way I can describe it. It’s like adding a bit of horsepower, even though I know it really doesn’t. You can feel the difference. Research this and see for yourself. I recommend it.

I bought this product for $25 donation to prostate cancer from a factory rep. but first I told him I add graphite to my engine oil. he let me try that with his torque on a oil soaked baring machine it stopped instantly. I could not get his Petron treated baring to stop spinning. I had a 1986 Toyota Pickup truck 2.L engine 165,000 miles. The fastest it would go / ever went was 85mph. After 5K miles the Petron started kicking-in it was going 90-95mph after another 4 months I could bury the 110mph speed odometer. I could bring up the idle to 1500rpm let the clutch out the tires would spin continuously until I ran out of parking lot. The same result with my 2010 Toyota Highlander 100,000 miles, I routinely drove at 80mph after a few thousand miles with the Petron I would routinely look down at the speed odometer the needle would be at 100mph mark, with same throttle position. I never had an engine failure with product. Let me warn you - if you don't take this product seriously - you'll wrap yourself around a telephone pole.

I started Year ago on New 91GMC Ext.Cab 5.7 used about 1qt oil between changes took back to Dealer oh it just breaking in it became the norm after break in not as bad about 1/2 qt between changes found this at aflea market Demostration I did it my self with Torque wrench they're if you seen video of Demo.you know what talking about. Anyway started using it every 3rd. Oil change took trip to Florida and back never used a Drop. motor ran cooler and better gas milage ,Not substantial amount but couple of miles to the gal. Finally sold her at 207,000 miles still Ran great. no noise in motor didn't use or burn oil . Hard to let go had her 21yrs. Bought used 2013 chevy silverado ext cab. 5.3 everything good in beginning. Noticed using a little oil between changes . Wasted No time. found this again for Synthetic oil . Put it in evert 3rd oil change back to Florida again and Back Not a Drop used . Cost a little bit. But Benifets will last long long time. Nothing else Like it . CK video out your self on Petron Plus . I did it in person it's Real. B.F. Ham Oh.

Why I give this two stars? Why would a product they claim treats the metal and not the oil in an automotive engine need to be different for a diesel (12122)versus a gas (12121) engine? Two different products that are most likely the same thing to throw the customer off. Almost feel for this snake oil pitch but caught myself at the very end as common sense came through. Good luck folks. There is no such thing as a ''mechanic in a can'' remember.

I added a small amount of Petron Plus to my 18 y/o craftsman lawn tractors engine oil ,it made such a difference i start letting the clutch out easy...if not it felt like it was going to pop a wheelie. I added a small amount to all my lawn care equipment that use oil....Great Stuff!!

My 2016 Honda Accord V6 Touring would consistently get 28-30 mpg Hwy over the years. I have a digital mpg dash readout and that's what it averaged ALL THE TIME! BTW, I do my own oil changes. So, I put in my required amount of oil (less 10% -- about 12-14 oz.) and re-added that amount of Patron Plus to the oil. I literally started to average 33-35 mpg as displayed on my mpg readout. The best was 35.x So, I called the East Coast Rep, who signed the NAPA purchase agreements to carry Petron on their website, and told him. He asked for a picture to post on their site so I sent him a pic of the readout that I had taken. This stuff works. I put it in my boat engine as well due to the product's "magnetically charged" particles which adhere to cylinder walls thus keeping H2O moisture from creating any rust....at least that's my theoretical reason for doing it. Plus I had flat tappets and was tired of adding zinc! This is a metal treatment and a great one at that so I'm convinced it works better than Zinc on my tappets!!!

no way to tell if its working?

Am using. We’ll see if it helps.