because the fluid may just be from 1995.(year produced, since most cars were made previous year
Dexcool although it isnt a boogeyman there WAS a formulation change and gm got more specific with regards to special instructions. True, the additives and coolant wont be broken down nearly as much as a lot of situations, it is still had a lot of time to sit in a system which is only sealed by a cork gasket on a vented cap(baffled but still)
Plus if system had any rust or breakdowns going on, it would be the time to stop that in its tracks 🙂
Thats a lot of maybes and who knows, but if we get a glimpse of it we will be able to tell a lot 🙂