Hi Rich, I get what you are saying. Here are my answers. First, Thermoil would be an additional cost, and additional manufacturing process step. For dry-shipped batteries, it is an additional component and step for the distributor or end-user to complete. And though this sounds cynical, if it does extend the life of batteries, and users don't expect this, why kill the goose that lays the golden eggs?
I don't think there's any risk to adding the oil. Apparently, people have used mineral oil for this purpose before Thermoil, with no damage. And, the oil will probably save your batteries if you neglect watering for a long time.
I don't think there's any risk to adding the oil. Apparently, people have used mineral oil for this purpose before Thermoil, with no damage. And, the oil will probably save your batteries if you neglect watering for a long time.