EVAPORATION OF ANTIFREEZE on 2002 Chevrolet Trailblazer

I GET MY OIL CHANGED EVER 30,000 MILES TO WHICH THEY TOP OUT ALL OF MY FLUIDS, ANTIFREEZE BEING ONE OF THEM. WHY DID MY ANTIFREEZE EVAPORATE AND MY CARE STARTED RUNNING HOT AND THEY ARE UNABLE TO FIND ANY LEAKS? ALSO IS THERE A RECALL ON THE TYPE OF ANTIFREEZE BEING USED?

by in Kansas City, MO on May 17, 2009
3 answers 1 comment
ANSWER by on May 22, 2009
Antifreeze does not evaporate, it must be leaking somewhere. There could be a very slow external leak which is very hard to find or you could have an internal coolant leak into the cylinders causing coolant loss. At this time there a no recalls on the dexcool antifreeze used in your Trailblazer however there have been some problems with that type of antifreeze. Try searching the internet for more information on dexcool antifreeze.
ANSWER by on August 19, 2010
If I was you I would be changing my oil sooner than 30,000 miles. You must be putting some good expensive oil in cause I do mine every 3,000 to 5,000 miles.
COMMENT by on April 04, 2011
Did he mean three "thousand"? I sure hope so!
ANSWER by on September 01, 2010
i have the same problem with my car i believe its due to the water in 50-50 mix that evaporates.