One important aspect of reducer/thinner for the primer is that it allows the primer to sink into the surface imperfections and seams. As a primer, you want as good adhesion as possible.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| 
