04-13-2015, 08:19 AM
Your 9.5 mpg is worth bragging about. As to golf cart batteries, I assume they will be replacements for the 2 8d and not in addition. I would not mix. If the 8d are starter batteries, the golf cart deep cycle batteries should perform much better. I have added a watering system that fills them all at time, and I am very pleased with my installation.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica