I absolutely believe all LubeGuard products work as advertised. I am a 18 year journeymen Diesel Mechanic and have always used them. My bottle only came with 1 test strip not two.

Great product. Highly recommended!

Okay, I have to admit that this is my very first time using this product. It is NOT like any other automotive type of anti-rust/ anti-corrosion material I have used previously. It is a clear pink liquid... almost a light purple. It does NOT contain any type of soluable oil or such at all. I cannot tell how it would act in any way like it says it does as a water pump lube etc.... I didn't say that it does not work for that, merely that I cannot tell at all how it would work like that. Okay? Now it uses two major nitrate chemicals to tie up O2 in the fluid so it cannot oxidize, and possibly will not corrode nor rust at all..... that sounds great. I am using it in the cooling system of my PU now, but have not had it long enough to really say +/- about the long term use of it..... I have a LOT of hope for it because of my industial background. We used to use such chemicals to stop all rust and corrosion in piping for cooling and heating in HUGE inside building internal loops - VERY effective - but some were certainly MUCH better than others. So far, so good, and I do really hope that this will be the best I have ever used. I will try to remember to update this eval next year with more specific details.
For now: The concept sounds excellent, the true long term effects are as yet unknown to me, but it is NOT too expensive a product to use, and it does use some proven principles to make it's claims for excellent funtionality. (Note: You need to use a certain "mix" of the liquid into so many gallons of coolant, so don't just dump the whole bottle in until you sort of figure out how much you actually need to use.... that's not too hard to do, just simple math.) Good luck and enjoy!

best product availible in usa.#1 for trucking industry

Looks like it will work real good got here on time and in good shape.