STPHeavy Duty Ceramic Engine Oil Treatment for Extreme Conditions

Arrived intact no leaks in package. Great product. I substitute 15_16 oz or a bout half a quart at each oil change. Runs real smoot. V6 3.8L Nissan.

Has saved fuel in every thing I use it in !!!

good

doesnt do anything ,its crap

Seems to quiet down my ford coyote…but pricey.

I Just noticed on the comments that its true I received this open up its not sealed how do I know for sure its not tampered inside is still original liquids, Im starting now to be concerned the cap is not lock like its should been lock there should be sealed to know that your the first one open it, but this is not the case when I received it was not leaking but its like no sealed.!!!

Item(s) were unsealed wrapped in Harbor Freight bags, leaked through the box. As vises by mechanic the fact items were not factory sealed was a concern, believed cans were filled with something other than the description.