I need to use a pressure type pre lube system to make sure all parts are lubricated prior to starting my engine that has been sitting for several years since being rebuilt. This type of oiler is necessary because the LT1 Chevy engine does not have a conventional distributor that can be removed and a drill powered pre oiler used. I had to get my MIG gas bottle refilled this week and while I was there I asked the guys in back if they had any small gas bottles that they could not refill but that would still hold 100 psi. He came up with a small oxygen bottle that he said I could have. I cut a 2" hole in the bottom with a hole saw and welded in half of a 2" pipe coupler. The 2" plug was drilled and tapped with a 1/4" npt thread and I attached an air fitting with a 90* elbow. The small end already had a 3/4" npt thread where the valve used to be. The 1" aluminum block is drilled and tapped for a 3/4"-16 (fine thread) which is the same thread as a PH16 oil filter has. I drilled a 5/16" hole through the axis of the bolt and turned the smooth shank end down and cut a 3/8" npt male thread on it so I could attach the ball valve. The tank attaches to the top of the block with a 3/8" pipe nipple and 2 reducer bushings. A passage is drilled down to intersect with another hole drilled into the area inside the I.D. of the filter gasket. The pressurized oil will go into the outside of the filter, through the filter media, out through the hole in the bolt and then to the engine. I wanted to use a filter in case any dirt was left inside the tank although I cleaned it really well. The only two things I had to buy were the 2" pipe plug and the oil filter - less than $10. I had everything else laying around. The way it will work is a hose will be connected from the ball valve to the port where the oil pressure sender screws into the block. with the ball valve closed I can fill the tank with 2-3 quarts of oil and then screw the 2" plug in place to make it airtight. I will then attach shop air to the fitting (regulated to 50-60 psi) and then open the ball valve. The oil will fill all the galleries in the engine and pre lube all the parts.