How to Replace the Antifreeze in a Buick Regal?
2 Answers
Method for replacing the antifreeze in a Buick Regal: 1. Open the radiator cap, then unscrew the drain plug at the bottom of the radiator. To prevent burns, use a thick cloth to wrap around the plug while unscrewing. Drain the antifreeze partially, then start the engine to operate the water pump, ensuring complete drainage of the original antifreeze from the vehicle. 2. Insert a water hose into the upper inlet to flush the radiator and water channels. Keep the engine running during this process to allow the water pump to assist in water circulation, thoroughly cleaning the internal cooling system, then drain again. 3. Tighten the drain plug and pour in the new antifreeze. After filling, start the engine again. The Buick Regal is a mid-to-high-end sedan from Buick, with dimensions of 4843mm in length, 1856mm in width, and 1484mm in height, and a wheelbase of 2737mm. The new Buick Regal is equipped with either an LFV 1.5T turbocharged engine or an LTG 2.0T turbocharged engine, with the model designation upgraded from the older LDK to the new-generation LTG.
I previously changed the coolant myself, a skill I learned after driving a Buick Regal for several years. The key to coolant replacement is safety first—it must be done when the engine is cold, as opening the radiator cap on a hot engine can release scalding steam, which is very dangerous. I usually prepare the tools in advance: a wrench, a bucket to catch the old fluid, new coolant (make sure to choose the correct type—the Buick Regal uses universal green or red coolant), and clean water for flushing. The steps involve locating the radiator drain plug in the engine bay, unscrewing it to let the old fluid drain out, then flushing the system twice with clean water to prevent residue from clogging the pipes. Next, fill the expansion tank with new coolant up to the marked line, start the engine for a few minutes to release air bubbles, and top up the level if needed. The whole process takes about half an hour, but DIY saves money. I replace it every two years because aging coolant can corrode engine parts and cause overheating. If you're unsure about the drain location, consulting the manual or checking online tutorials is safer.
