TR3 is my favorite thing to use. You just have to follow the directions, and have a good supply of cotton balls handy. Caution though, it will remove a flaking clear coat so you have to be gentle with it where the clear coat is compromised. I've not had any issues with it harming decals but I've read of it removing what's left of already damaged decals. Keep changing your cotton ball as long as it's removing dirt, and don't let it dry until the machine is clean. Best to do a small area at a time, when that area is clean, move on to another spot while it dries on the previous spot. When you've done the whole machine, then buff it all off. That's how I do it and my black machines come out very shiny. You don't usually notice the shine as much with colored machines but when I was taking pics of my pink Select O Matic after I cleaned it I saw the reflection of the motor on the machine bed in the pics so it does get them shined up as well.
Cari