Well the two quarts probably aren't in your radiator. A teaspons worth makes a mess.

You are probably burning the oil through valve guide oil seals, but that engine is known for some cross gasket oil leaks. Sometimes they just cross to the outside of the motor and sometimes they pass a coolant passage on the way. They do make messes. Two quarts of oil will make one huge mess, so it should be obvious if the two quarts were leaked or burned.

I would find where its going before figuring what to do.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician