2low ,
what line is this PPG paint ? DCC , DBC or DBU ?
Not all reducers will inter mix with these products .
DCC takes a DU catylist and DT reducer and is a single stage
DBC is a base coat and is reduced with the DT reducer BUT,
DBC take a reactive reducer called DRR and when mixed hardens and cannot be reused after 24 hours ( depending on temps ) .
SprayTech