Hi..need some expert views. My 1996 civic has sludge in the radiator and below the cap.
Have checked :
1. Engine oil : no milky manifestations, does not leak, no oil loss
2. Temperature : stays normal at all times, no spike
3. Exhaust smoke : normal, no whitish smoke
4. Performance : no deterioration
5. No water shoot out from radiator when engine is cranked

just flushed my radiator..and deposit starts to build up the next day.
Mechanic tells me that most likely my block is warped...and an engine change is neccesary. Either that or get a new car.
anyone experienced something similar?

Thank you.