PSA: A guy at the NAPA counter in Boise told me torque-to-yield bolts are one-time use only
I always thought that was just the manufacturer being greedy, but he explained they stretch past their elastic limit when you tighten them, so reusing them means they can't clamp right and I've been doing it wrong on every head gasket job for 3 years, has anyone here caught themselves reusing TTY bolts out of habit?