I ordered one and when it was connected to the battery according to the instructions it threw sparks in all directions. I sent it back for another, same thing happens. A guy came up to me who knows a thing or two about motors and batteries and he said the motor had a wiring issue that was causing this. I recently saw a review of another oil tank from the same company that described the same problem. I think the company that makes these may have received a defective batch of motors. High marks Revain, they refunded my money quickly after the second bad one.
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