"Like A Rock",is the only way I can describe it! My friend's step-dad,is getting yo the point of selling a bunch of vehicles,so a couple of weeks ago,he decided to start 5 of his buses. They've ALL been sitting since 1984!! 4 Chevy 65's,with 350's/2 with 4-speeds,2 with 5-speeds./all 2-speed electric rears. The G.M.C. is a 6500,366 engine/5-speed/2-speed. Every one of them started,and the brakes pumped-up!! All on one battery-no re-charge necessary!! Just proves the quality,and durability, of these fine gems! I went out there a couple of days ago,and Ron pushed the one (with the front axle missing),By the front clip,with the skid-loader! It WAS in PERFECT shape!! I told him that he just smashed $300-$500 bucks!! I wish I was there and had my camera! I heard about it after they had them all moved! I'm still MAD!!