Quote:
Originally Posted by Tech II
The only place you are going to open up on the system, is the radiator hose off the thermostat housing...the machine attaches to the hose and the housing......most flushing machines come with their own additive/sealer(which is added after the flush)......I like using them because they are in liquid form, unlike the tablets that have to be crushed and forced into the coolant system....to each his own....
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Had the cooling system flushed last Saturday at a GM dealer (it was REAL quiet there on Sat) and feel I was misinformed about the procedure. They siphoned or extracted the fluid from the radiator cap, and later, the recovery tank has LOTS of debris floating on the surface of the coolant. Some of it looked like aluminum chips. Further I swiped a finger on the wall inside (the tank) which wiped off gray crud clear down to the plastic. This even though I specifically asked to FLUSH the RECOVER TANK thoroughly.
So they charged $101 dollars for 35 mins of work (30 actually) plus coolant, plus flush chemicals. The reason for going there was.. they understood DexCool and had a machine charged with the stuff. This is not up to my standards, and I could have done a better job, at least hosing out the tank.
Cooling System Service
06/02/12 130,982 miles Sterling Chevrolet Coolant Flush
10/04/07 100,410 miles Star Buick Cooling System Flush
09/01/01 84,555 miles Superior Buick Cooling System Flush
10/ /96 0 miles Vehicle manufactured
What do you think? The dealer said they'd run the process again next week if I wanted. Maybe I'LL remove and flush the tank. Hell I used to do that when I was a kid back in the 70's!!
-Ed
p.s. the mechanic said he siphoned it HOT and that got the heater core.