I have two questions both related to Dex-Cool, as follows:
1) I have a 2000 Buick Century with a 3.1-Liter V6 engine purchased new. It spends most of its time parked in the garage and has only 9500 miles on it as it is driven but two or three times a month. Buick changes the oil regularly on 3-month intervals but the service department recommends that I have the engine cooling system flushed and refilled. The coolant is clean and looks identical to that which is in its original 1-gallon bottle stored in my garage.2) I regularly drive a 98 Cavalier with a 2.2-Liter L4 engine purchased new, and has accumulated 45,000 miles to date. The coolant is clean just like the Buick but it was also recommended that I have that cooling system flushed and replaced.
Neither auto has any problem that I?m aware of. Possibly the Cavalier should be serviced but I question if it is required for the Buick. Please excuse my rudimentary questions but those routine maintenance charges keep adding up. Your knowledgeable opinions would be of great assistance.