04-13-2015, 03:58 PM
I also purchased my 12 Interstate batteries at Costco. Since I fill all 12 batteries at the same time, I doubt that I used two quarts all of last year. I cannot judge the coverage, but my 12 deep cycle batteries out perform the 6 8d starter batteries that they replaced.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica