Appreciate finding this group - new to brass cars, uncovered a 1911 Buick, model 26 roadster – got it in running condition. Having the magneto remagnitized due to starting only through a slight tow. What should the plug gaps be size wise? Also not sure on this 4 cylinder how you know the oil level is full? I do not have a oil tank, just two filler tubes, one per jug, one side petcock on the motor and a plug at the timing cover. Thanks. Dr. Brian, Watseka, IL