Does anybody have any data on the anti-freeze/coolant I've seen in parts stores that says it replaces both the old green Ethylene-glycol and the Orange Dex-cool types. I am nervous to use this, but I wonder if it's really okay. :help:
I'm nervous to use anything else except Dex-cool. Especially since the owner's manual calls for Dex-cool. It just seems like less of a hassle for warranty if you just use the GM stuff, instead of mixing in universal coolant. That's JMHO.
X2 on the Prestone. It is a good bit cheaper if you mix it yourself. I had heard some bad things about the regular GM Dex-cool... gumming up heater cores and such. On my current GM I had the cooling system flushed and replaced with Prestone to avoid those issues. But, maybe GM has improved their formula over the years.
Dexcool is a problem is theres a leak in the system- where air can get in--- then it tends to gunk up...
But Dexcool is very good.
It will go 150,000 or 5 yrs in a sealed system
Heres my 2003 Trailblazer- I changed out a lazy thermostat at 111,000.
That is one CLEAN cooling system. note the marks from the cast foam engine making process. the little round balls.
I replaced the dexcool at about 135,000 I think.... along with upper and lower hoses--- when I was prepping to make a 3000 mile trip to Mexico.
Now at 157,000.
the concentrated stuff- you have to measure the concentrated stuff- AND BUY distilled water- then premix - then pour.
unless you simply do the ohhh a little of this--- and a little of that.. and eyeball it as you pour in?
If youre using tap water--- then you just introduced minerals into your cooling system.
unforunately, my local walmart doesnt have the premixed prestone dex-cool...but i found on a Canadian Tire webiste,
Peak's version of dex-cool....BUT it doesn't say 'extended-life', though everything seems to be the same.
Is this the same as the Prestone version?
There seems to be alot of horror stories out there about Dex-Cool...is this something to be concerned about? I don't want to mess up my warranttee but does anyone have any experience with the Lambda DI engine NOT on the Dex-cool or the Peak/Prestone versions of it?
I currently have the universal fluid in my Silverado. I had a water pump go bad at 175,000 miles ( not bad actuall, just a slow leak ) so I replaced the pump, and drained as much of the fluid as I could. From there, I decided to use the universal Anti-freeze as I wasn't sure how much of the Dex was still left in the system. As of now, 2 years, and 20,000 miles later, the Silverado is still running strong, and it doesn't get that pink dusty buildup around the overflow reservoir that it use to with the factory Dex. I don't see a problem with the Universal, especiallly in my case, where I was WAAAAY out of warranty.