So the old boy has been sitting for 11,12,13 years with a full tank and without any engine activity. I eventually got smart enough to dump a bunch of stabilizer but nothing in the last 4-5 years. Threw my concerns out to several local car buffs and got "just start it and see what happens", "drop the tank and air purge or chemically purge the system. You don't even want know what my Caterpillar buddies recommended. Probably why they get $185/hour. So . . . do I drop the tank (will have to find someone in the Socialist Republic of California to take it) or what?