One of my other projects is to help the gentleman who's tractors I am rebuilding get his 1918 American LaFrance fire truck running. It's been 34 years from what I understand. It is a in line 6 T head. Looks to be in good shape. No oil leaks from what I can see. Hopeing that someone here might have some info on these engines that they might want to share. This is a museum Fire Truck. Any help or direction would be appreciated. All I have done so far is pull the plugs and add Marvel Mystery Oil to the cylinders and valve cups to let it stew for a while before I start with the hand crank.