Wow Foolish, way to throw a damper on a fun thread. Why do I care what he does to the engine? 
I wanted to hear how he blew a rod through the block or turned the engine into a molten lump of aluminum...
He he he. Sounds like since they clearly paid for the other repairs, and your car is working now, they don't owe you anything. You can't get a warranty to repair or replace something that is not yet broken.
"Hey, it seems like my engine is getting old, I'm sure something's going to break soon, it's not what it used to be... can I have a new one?"... "No."
I wanted to hear how he blew a rod through the block or turned the engine into a molten lump of aluminum...
He he he. Sounds like since they clearly paid for the other repairs, and your car is working now, they don't owe you anything. You can't get a warranty to repair or replace something that is not yet broken.
"Hey, it seems like my engine is getting old, I'm sure something's going to break soon, it's not what it used to be... can I have a new one?"... "No."