I am no painter and so I can only say what worked for me for my truck camper shell. I used nearly 40 percent acetone and a cup of I think is was japandry. and it worked with less thinning I had to redo the whole thing it did not dry hard. and this was a couple of years ago and still look ok on the shell for the truck.
I haven't used Rustoleum in years and Saturday I picked up some spray cans of Satin Black enamel at HomeDepot and Low Gloss Black Valspar at Tractor Supply(nothing was labeled as Satin) Sprayed them both on a test panel and the Valspar looked like flat black old wrought iron rough look (**** ) while the rustoleum had that nice OEM black satin look. I was planning on the buying a gallon of the Valspar but pretty skeptical after the spray can experiment. Temperature was a near perfect 75. Having been eyeing the tractor colors in gallons as well but now skeptical. I also sprayed Valspar on top of the Rustoleum and got that alligator effect. Are the Valspar spray cans the same material as the bulk paint? Touch up paint in spray can is a nice option.
We use Rustoleum satin black out of a spray gun to paint engine compartments. The finish is really nice and very close to factory tone. The best part is it is like $9-10 a quart compared to $40-50 for the supposed engine compartment paints out there. We thin it with acetone 100%, which means 1/2 paint to 1/2 thinner. Spray at 30-35PSI with a Binks touch up gun and covers in one coat. Being that were are painting an engine compartment with all the nooks and crannies, we are painting for a long period of time, the Rustoleum has quite a slow dry time and end up with very little if no dry areas in the finish. One word of caution, the paint fallout is very high and the paint dust floating through the air will stay wet for at leat 100 miles or so and if you dont have good ventalation in the shop, you better cover everything you dont want overspray on. We have even got overspray on stuff outside the shop, like cars, that the fan has taken out of the building! So be carefull about the overspray. Bill
I went twenty percent, satin brown and came out fine. gravity gun set to spec. pressure. did take a while to dry, but it was outside and 90 degrees too when I shot it.
I used rustoleum satin black on my f100 (pics in rprofile) mixed about 15 to 20% with acetone seemed a little thick sprayed it at 35 psi next time i use it im thinning it more I let it dry over nite and didnt use hardner