Ok I need a little help. My roadster is painted with tractor paint(from tractor supply - same as blitz black) I painted it a couple of years ago. I had to repaint the door and it turned out flat not the original matte black. When I painted the car a couple of years ago I mixed the paint per instructions 8 to 1 paint to reducer. When I painted the door yesterday I mixed it wetter 8 to 2 and it dried flat. Will mixing it different cause that?
The extra hardener may have forced it to dry faster and killed some of the sheen. In my experience I have found that things left to dry naturally often come out glossier than things that have been force dried (baked). This is also the case with over hardening sometimes, it messes up the chemical reaction and can make for inconsistent results. There are other variables also, like if you did wetter coats last time.
You may be able to wash it with dish soap (no silicon) and go over the whole car with a grey scotchbrite pad to give it the same sheen.
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