Originally Posted by babock
I used to work at GM..I am an electrical engineer.
When I was at the GM proving grounds talking to people doing ECM work on one of the engines at the time, they told me stories and stories of aftermarket tuner people doing things that made no sense since they had no idea what the designers had to go through to come up with the parameters programmed.
This reminds me exactly of that.
Funny...almost every one of my cars has radiators with aluminum cores with plastic tanks. My truck has 105K miles and my Lexus has 205K miles. Never had a problem.
I see you live right around the block from me...I am in Chatsworth.
I am not changing any "tune". My gauge reads 209 all the time.
Hot or cold ambient temp. That is too hot IMO. That being said...it appears the gauge is wrong based on others and the thermostat being either a 182 or a 187. It probably runs at 195 most of the time. That is fine.
I just do not like running it at 209 all the time.
This motor has been around for a long time...hasn't changed that much- several variations I am sure.
I too have plastic tank radiators in my other vehicles. And I see them in my work every day "seeping" at the seals. (mine was "leaking")
These A/C Delco radiators have issues- according to a guy that sells a boatload of them to RV companies that I spoke with. GM is supposedly aware of it. maybe it's the way they are mounted and vibrations.
But like Ford, I am sure they will just keep using them for 10 more years.