The problem isnt the coolant, its how often u change it.
Dexool is supposed to have longer life but still only lasts so long, most people dont even flush there coolant and put new in and then it eats there gaskets and there internals. i wonder why...
Green coolant will do the same if you dont flush it in the period of time its supposed to last.
Ive talked to a few mechanics and im gonna keep the dexcool, but just flush it again before its recommended life span. So lets say its supposed to last 150,000km, il change it at 100,000-130,000km to be safe.
Same with green coolant. but ive just heard when dexcool goes bad its bad lol.
Although i did go with the aluminum LIM gaskets :P, makes sense. better quality.