Just acquired a '68 280se which has been sitting since '94. Engine is frozen. Previous owner stated that the car ran perfectly untill he stored it in the garage and left it.

I removed all the plugs and "pickled" the engine with Marvel Mystery Oil. I noticed that the oil level in all cylinders eventually drops after a few days except for # 2 and 3 which stay full. I removed the radiator to gain access to the crank pulley bolt and have a breaker bar attached. Have been rocking back and forth daily for the past 2 1/2 weeks, but still no progress. I can't see any place where I could gain access to the flywheel to turn from that point. Any ideas??