Originally Posted By: SirTanon
Before you flush it out, I would go back to the mechanic and ask him what specifically he put in.
I say this because if he used anything like the current Prestone/Peak/WalMart/etc.. "Universal antifreeze/coolant" - which is a bright green - then it is, for all intents and purposes, a "clone" of dexcool.. or a "dex-clone". It may look the same as the old-school 'conventional' stuff, but it's not.
If this is what the mechanic put in, then I'd say you're good, at least for a couple years.
I recently bought the universal Prestone at Walmart thinking it was the equivalent of old green. It's not. It's a dexclone and not even a darker green like the old formlations. This one was light lime green - yellow.
Orange DexCool in my 1999 Camaro LS1 since day 1. No issues. I change it every 4 years. It's a fine coolant if you don't mix anything with it, and keep your system full.