I don't care what's on the label. Be it SPI, PPG, DuPont, or Costco. If it works, I'll use it. I've not tried SPI yet, but may do so on Ol' Blue.
I just wish they could mix OEM colors. They're just up the road from me,
And If I could use their system from bottom to top, would be great.
I turned on a buddy of mine to their single stage matte finish urethane.
He had trouble with it at the start. Mixing it, and spraying it according to label directions, he got a bad, orange peel/dry spray finish. There was no way to wet it enough. So, after the first coat dried, he sanded, and reduced with PPG 885 reducer (it's what he had on hand), and achieved a nice slick matte finish that he was looking for. Apparently, the label mentioned nothing about reduction, and when he called the reps, they didn't know what the problem was either.
I'm using "Ol' Blue" as a testbed. So I've been using some products that I've never used, just to see what will happen.
What would be the best SPI clear to use? Their top of the line.