Took the Jeep to my mechanic for four routine service and maintenance. Oil change, lubrication, etc. Probably been a while. Alas, he found a crack in the engine block. The plan is patch with StopLeak, J-B Weld, etc. I won’t be driving it fast or far and if/when it stops running we’ll look at replacing the block. As far as I can tell, almost all old Jeep blocks have a crack (or soon will). On the bright side, replacing an engine on a CJ-2a is as simple as it gets. And the Jeep won’t be my daily driver, just for fun in the sun. And we just need to keep the Jeep running as long as I am. A lowering bar.