Swapping from Dex-Cool to the green stuff

[DarksideGA]

So after reading about the class action lawsuit against gm for the problems caused by dex-cool I want to flush my sustem and swap over to the green stuff. How would I go about doing a flush and my engine has 110k miles on it would there be any reprocussions due to swapping over this many miles in?

[robby1870]

Use the new yellow stuff. Works in both systems.

[geoffinbc]

I have always used Prestone. They only make one version now, good for all motors.

Follow this procedure from GM http://members.shaw.ca/betterthanyou...xcoolflush.htm
But of course dont fill with Dexcool. If you live where it never freezes use distilled or filtered water and Redline Water Weter and forget the antifreeze.

[97cutlas$upreme]

whats wrong with the dexcool? thats what i have in my radiator has in it now... i had the green when i got it but it kept throwing it up but wouldnt over heat... and since ive put the dexcool all ive done is just change the thermostat and upper and lower hoses... i havent heard any problems about the dexcool somebody fill me in with the 411 please

[Superdave]

whats wrong with the dexcool? thats what i have in my radiator has in it now... i had the green when i got it but it kept throwing it up but wouldnt over heat... and since ive put the dexcool all ive done is just change the thermostat and upper and lower hoses... i havent heard any problems about the dexcool somebody fill me in with the 411 please

Dexcool eats away plastic in the system, usually eats away the lower intake gaskets in the 3100's and 3400's. It also creates tons of deposits in the coolant passages. my 3400 had around 30K on it (2002) and i ran tap water with powdered water softener through it for a week... flushed the system 4 times and chunks of red crap were still coming out.

I have some pics somewhere...

Dexcool is crap, hence the lawsuit

[97cutlas$upreme]

i know these stock radiators are usually crap.. i havent had any major overheating problems but im looking for something aftermarket maybe an aluminum rad... theres a shop here in town that could custom build me one by taking measurements and every thing but hasnt called me back with prices any body know who i could hit up for something like this

[geoffinbc]

Thats gonna be several hundred dollars. Don't waste your time. Make sure the stock one is clean and you will have more than enough cooling.

[Superdave]

you can get an idea of some of the crud from this pic...

(1.0 MB)

http://www.superdave81.com/Z24/3400%20241.jpg

it was that and this slimey white/pink stuff... never got it all out even after a coolant flush.

It's going in for a dip in the hot tank in December, hopefully that'll fix it