STPCeramic Oil Treatment, Protective Coating and Anti-Friction Technology, 15 Oz (19387)

This flat out works! I purchased this for my Infiniti Q60's 3.0 twin-turbo V6.I wanted to make sure my engine stays clean and all parts that come in contact with oil were ceramic coated. Dirty oil can prevent the oil pressure solenoid from opening and closing, leading to catastrophic engine failure.I also wanted to give my turbos extra love. This car calls for 0w-20, and I feel better using 5w-30 with this product, as it adds a layer of protection and claims to cause the oil to move throughout the engine faster.My city mileage improved from 17 mpg to 19.8 mpg, and my highway mileage has improved to 34 mpg at 75 mph. Please keep in mind this is a 500 hp engine.If you check YouTube, you can see there are reviews that proved this product lived up to its claims and even reduced wear in back-to-back testing.My engine is noticeably quieter and smoother on startup. I won't go an oil change without it. Valvoline MaxLife Oil + STP ceramic is the best value and protection available. After having my oil analysis done, I saw better results with this combination over Amsoil. If you're someone on the fence wondering if this will function as you expect, just check it out and never look back. You won't regret it.

Great product, As advertised it does provide better gas mileage, most likely due to less friction in the engine.

You may ask, with this being a liquid, how is it dry??Well, I'm referring to the Ceramic Si02 component, which is a Dry Substance that is mixed into an oil based carrier so that it can circulate through the Engine and come into contact with vital moving parts of the Engine such as the Pistons and Rings, the Crankshaft Bearings and Connecting Rod Bearings, as well as the Camshaft(s) Lobes and Bearings and Valve Guides, to name a few.Ceramic has been scientifically (There is a Video) proven to withstand up to 1,200 Degrees Fahrenheit, and will not break down or gum up your system like other products that use other known So-Called Dry Lubricants....It does NOT kill your warranty either!!!!!As far as Fuel Consumption and Economy is concerned, I cannot say I have noticed a marked increase in Fuel Efficiency, plus my foot is made of lead, but that is another issue, lol.... It might under the right circumstances, IDK.As far as the sound and performance of my Engine, I did notice a marked decrease in noise at Idle, and much less vibration of the engine at idle, the Engine runs extremely smooth now, that I can honestly say is happening.Also, my engine seems to be quite a bit more responsive and free using the STP Ceramic too. It just feels like it was given a bit of a boost, it accelerates much better, its very smooth, and I can feel it pulling harder through the Power Band than ever before, and that can only be because the moving parts are indeed being much better lubricated, friction is sharply being reduced by the Ceramic, and the engine is just free to cycle much better during operation.Again, other products make claims, but when put to the test, they are known in laboratory tests to gum up and break down when subjected to extreme heat, and they doing NOTHING to improve Overall Lubrication of your Engine's most Vital Moving Parts, however Ceramic Si02 cannot and will not break down, it doesn't gum up your system, etc., or anything else, even under extreme operating conditions like, for instance, the Arizona heat in Summer!!I strongly believe this product does what it is intended to do most, and that is add a layer of Dry Lubricant to your engine and allow less wear and more longevity to the life of your engine, and is IMO best used with Premium Synthetic Oil and a Premium Oil Filter.This is my own observation, my opinion based on my experience, I am not trying to sell anything, I am just sharing my personal results, and all I can say IMO, this stuff really works!!

Worked amazing, truck engine is much quieter and low idle now. Definitely recommend

Can't tell whats going on in my 2004 forester, but it quieted it down, runs nice and smooth, a little more pep, and the fuel millage has definitely has gone up..I never measured the millage before using it, but I will edit this post with what I am getting now.. In a few weeks..

I poured this product into my 2007 Toyota RAV4 with a V6 engine that has 245,000 miles on it. The engine runs strong, but I could hear the overhead valves clicking when I start the car until it warms up. After adding a bottle of this product, I was pleasantly surprised to find that the noise disappeared. The car also seems to run smoother now. Overall, I am impressed with the results so far.

The engine immediately runs smoother and quietter. Currant milage is about 80000 miles. However, I have not seen milage improvement as yet.

Worked well on a v-8 with 200k on it.