What would be the best replacement battery I could get? Where could I get it? What fits?

What type of oil do I need, & where can I get it for the Comptech filter for the Ice Box?

 

Dynacell and Interstate are excellent batteries and carry good warranties .Sears Diehard is supposed to be good as well.
Comptech sells it's own cleaners and oil for their filter set ups .It comes with directions and takes only a short time to do properly .
Jens

 

Interstates are Great batteries (for regular use).

Comptech uses Motorcycle filter oil (and I believe pre-cleaner) that can be bought at most Honda motorcycle dealerships.