XADO Additive for Fuel Equipment Pumps Injection Systems Equipment Additive Restores Repairs Protects Anti-Wear Wear Protection - EX120 Revitalizant

I have ordered two of these just so I can test them in my diesel as well as my petrol car. I am not sure if it works and there are no instructions on how to use it. It's a thick paste which if you just add into your tank, it will end up on the pipe with very low chance to get into your fuel. More than that, it's a paste, if it is getting on the bottom of the tank it will probably be pushed by the fuel pump all at once and it will be gone in 2 minutes. I tried to contact the seller and there is no seller contact option for this product. It is very fishy I got to say. I hope to get a reply on this. Cheers