Well if you like beating up your hand so be it, but I'll go pull out a ½" drive breaker bar and let the tool do the work...
I did run up with a hellish tight plug on wife's cousin's car... Just has a 13mm head, piece of cake, grabbed a ¼" ratchet and socket, wouldn't budge, back to box got a 3/8", same results... Finally pulled out the big gun breaker bar and it came loose but still didn't give up without pulling with both hands... What was surprising was the threads on plug and pan were fine, could remove it with my fingers once broken loose...