fass dri, is a consentrate fsa. it comes in a two gallon pail or 5 gallon pail. you should put 2 gallons in with 150-200 gallons of consentrate sealer. either additive will make your sealer blacker as it has a great reaction to the asphalt components of pavement sealers. thanks. any further questions please just ask!! thanks.
Mark McLeod
Maintenance Inc.
