#1 red

Have a customer who had temporary generators at facility ,done with them now and they have 300 gallons of #1 in a portable tank they have offered to give me free just have to haul it 60 miles home. Its about 4 months old, south Florida fuel. Any problems burning it in my stock 2014? Will the higher sulfur cause any issues? Should I blend it with #2 ?
I been adding 4 ounces of opti summer at each filling, my tank holds 65 gallon. Should I keep using it if I run the #1?
Or should I just pass and not risk it?