There are only so many variations a lock cylinder length will allow. Short cylinders have fewer variations while longer ones have more. Don't hold my feet to the fire over this but at one time I was told that GM had 13 variations. So out of every 14 vehicles off the line the key would match one of the prior 13. That was a big reason that the doors and trunk keys were different from the ignition keys. Gave more variations. Odds of 2 vehicles matching both doors and ignition was less. That was a big reason they started going to chipped keys because with a computer code embedded even if the keys fits making run was another thing all together. Sure the early systems like that would start and run for a very short time, then would shut down as owners had chips start going bad found out. Now look at the new ones today? Keyless???
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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