Perhaps you were thinking of Zerex? It's made by Valvoline. They have a few different versions available - the original green, DEX-COOL, and G05. For more info. you can go to their website, www.valvoline.com and go to "products"-> "antifreeze".
No country ends with the letter X.
A three letter word that ends in the letter x could be the word Hex. A hex is a witches curse or spell.
No, there is no word in the English language that starts and ends with the letter "x."
Ibex?
anthrax
appendix.
phlox
t-rex
Unfix is a 5 letter word. It begins with U and ends with X.
x-raying
Texter
Latex is a 5 letter word. It begins with L and ends with X.