Repair shops have a bad reputation. One reason why is most of us don’t really know much about our vehicles. When a repair person tells us our framastat and carburatic overgloid needs replacement, we just nod and sign the repair order.
One of the most common cons is the Oil Change Add-Ons: Many repair shops advertise a very low price on oil changes. Once they get your car in their service bay, they’ll tell you about all the other things you need – like a new air filter or a coolant flush. Unless you know and trust your repair shop, treat these tactics with skepticism, especially if your car has been running just fine.
BTW – Many of the coolants used in today’s vehicles are good for 100,000 miles.