Does the oil give the battery longer life?
Yes and no. It will not give it any more cycles. Some batteries are manufactured to get 300 cycles and some say 400 battery cycles. All batteries are different. The more expensive batteries usually have more life cycles. You get what you pay for. But, if you took two identical batteries and added the oil to one and not the other and failed or just forgot to check the water and clean the corrosion, the oil battery would probably last 2 to 3 times longer because the other battery would run out of water. I should say a battery or cables that don’t have corrosion already. Corrosion is like cancer, once it starts it keeps spreading. So if you add Thermoil® to a battery that already has corrosion, Thermoil® will not stop it, but if you add Thermoil® to a new or used battery that doesn’t have corrosion it will keep it that way. Can Thermoil® be added to any battery? Yes, any battery that has caps on it where you can add water. Thermoil® mostly benefits the lead antimony battery and not the ca
