For the same reason that glue doesn't stick to the inside of it's bottle!!!

 

I just stoped by my local autoparts store and every bottle I have seen that is used for radiator flushing is in a plastic bottle... Am I missing somthing ???

 

Just a guess...but maybe something chemically happens to the stuff once it's in the engine to activate it? Maybe like if it gets warm, or something. I really have no clue, just guessing. Like I said, why doesn't glue stick to the inside of the bottle?

 

the plastic bottles are made of a acid resistant plastic. take that same acid and put it into a plastic party cup and see what happens. the same effect is quicker with gasoline.

 

I think the dealer is giving you BS, IMO.

If the "acid" was eating away at the plastic components, they should REPLACE every plastic component that came in contact with the acid. When they do that, ask to see the plastic overflow bottle, the radiator side tanks, top tanks, connectors, etc. etc.......you know where I'm going with this.

I guess, what I'm saying, is the dealers have given you so many headaches (and explanations that proved to be worthless) I doubt if I would trust them.

THAT'S A REALLY LAME EXCUSE.

 

well I picked up the hhr today... boy did I miss it... anyways.. they took apart the radiator* (both side of it) and showed me the "crud " that they were talking about.* I was surpised by what they showed me.. If I had to discribe it I woud have to say it looked like paste.. dark grey paste... it was pretty disgusting.. I also noticed there was alot of white chauk like stuff on the side walls.* The service manager informed me in his opinion it look like sum kind of stop leak material that must have been put in the system to try and control the overheating, aparently the system wasnt flushed enough to remove all the debris.

 

Umm. That "Grey" paste in your radiator is what Oil and water look like whens its been forced to mix together. Better have em pull that head off and do a complete head job.

 

oh boy

 

You know if the engine had overheated as many times as yours did and then they showed me all this junk in the cooling system, I'd still be pursuing a replacement car. At the very least I'd want them to do a verified complete compression test and cooling system test on the system and then I'd expect in writing from GM that I still had a complete new 100,000 miles power-train warranty.

 

+1

You can also look under the oil cap and see if any of the "paste" is stuck to it.