To lug or not to lug?

[AutobahnSHO]

Lugging the engine is asking it to pull the vehicle and/or a trailer with minimum lubrication to the main bearings.  You're also asking it to do its job at a point where it isn't producing as much torque.  The strain is on the main bearings and that is where you're going to do the damage.

FWIW one of the biggest Taurus SHO killers was rod/crankshaft (Main) bearing failure. (Including mine...)

Supposedly lugging the engine if the bearings are old is a surefire way to SHOBoom! the motors.