Careful using the mint, it should be added that if you choose to use this on tires to condition them, make sure to do your other prepping to get your duro where you want it on that set of tires before applying the mint. If you use the mint first, it will be hard for even the aggressive preps to drop the duro of the tire by very much. I use the mint externally, once i have my internal prep work done already and cured. Tire Tuff original is good if you want to condition them and plan on maybe dropping the duro of that set later on down the road. The mint strengthens the rubber while conditioning it also, where the TT original just conditions it.