Air-Tec High-Class Micro-Ceramic Oil Additive

Noticeable difference.

There is a noticeable difference in the feel of the rpm, meaning the engine does seem to run more smoothly. I can't comment on efficiency, as I am currently not driving the vehicle I used it in.

Immediate results: I thought the engine was turned off

I drove to warm up the engine, poured in the 250 ml of hexagonal boron nitride aka "micro-ceramic" (.15 microns size)...drove another few miles - went into a store to shop. I forgot about having added the Air-Tec - but as I sat in the car, I also could not tell I had started the car! I have a Vortec 4200 that is known for valve noise - but I had to double check since I could not hear anything while sitting in the car eating some food. 292,000 miles and this is my third bottle of Air-Tec over a few years. My only concern now is the engine will outperform the reman transmission! So I'll try not to do WOTs. thanks

Air-Tec ceramic oil additives has all that I wanted. 👌