Super impressed! The product arrived within two days, and Techron continues to be my go-to for keeping my car running smoothly. I’ve noticed real performance benefits, and being able to buy it in bulk makes it even better. Great value and great product!

Restores power and increases mileage!

The best quality of engine cleaner for my car, all the problems for performance now gone.

Good for car with gas engine.

Received shipment of 2 cases of this product and one of the two cases had bottles that leaked and the box was soaked. So I lost approximate 2 bottles, since it was more than just 1 bottle. The seal is not sealing on the lid, thus the leaking bottles . I will not purchase these from SAMS due to this reason.

Shipping is terrible , spill all over in the box.. one don’t have a safety silver tap inside and another is loose

12 oz — I thought it was a good deal. Each bottle only treats up to 12 gallons of gasoline. The 10 oz bottle at Walmart treats up to 15 gallons of gasoline. In both scenarios, you end up spending about 55 cents for each gallon treated. These bottles are very likely less concentrated.

Sadly, as others have pointed out, the bottles leaked and the box containing them was completely soaked. Not sure how much product was actually lost, but be aware this is not a one-off. Many others have had the same experience.

The product is great, but every single shipment I’ve received leaked during shipping. The box is covered with the product and it has strong odors.

Good product, but poor execution on the delivery. I received a box that was soaked from the inside. One bottle was busted on the bottom corner and spilled all 12 ounces on the inside of the box.