GM’s legendary L92 V8 can rack up crazy miles, but even this beast has a secret Achilles’ heel. A teardown of a 268k-mile engine from a Yukon Denali revealed total carnage inside—think holes in the block, a shattered piston, and a destroyed oil pan. The real culprit? A dropped valve seat, likely caused by overheating. Turns out, even the toughest engines can’t survive if you ignore the warning signs. Moral of the story: keep your cool—literally! #Cars #CarTalk #EngineFail