I have listen about the Lucas Product on XM Open Road and finaly i went too Mid American Truck show stop by your display talk to a rep I pick up 2 5 oz containers to try , I have never added anything to my vehicles but I thought i give it a try , what a difference in my truck it is smoother running and seems to have better pick up on taking off from a light , I am spreading the word to my freinds that for sure ,Also I like to Thank Lucas for a quick response on a E mail on my way back from Ky to Maryland that additive started too work and carbon started to come out of exhaust just a little puff of black smoke from my power stroke .I had a concern so i sent a e and my question was answer within the hour ,So many sites you go too ask a question you never ever hear anything from them so Not only does your additive make a difference but you have great customer service Thank You Greg