The transmission fluid is one of the most vital fluids to monitor in your car. Whether or not you should change it is a non-issue: Yes, you should. However, there is disagreement about how often this service needs to be done by manufacturer and car.
Many automatic gearboxes require little if any fluid change until 100,000 miles or perhaps 150,000 miles. A lot of professionals believe that it should be changed at least every 50,000 miles. Because manual transmissions run on heavier gear oil rather than automatic transmission fluid, they have a different maintenance schedule and are best addressed in the owner’s handbook.
2018 2019 2020 Buick Regal Transmission Fluid Capacity and Transmission Fluid Type
| Transmission type | Fluid capacity | Fluid type |
| 9 speed 9T50 Automatic Transmission | Total Fill 10 quarts (9.5 liters) Initial Fill 5.3 quarts (5 liters) |
AF6 |
| 8 speed AF50-8 Automatic Transmission | Total Fill 7.5 quarts (7.1 liters) | SL036 |
2011 2012 2013 2014 2015 2016 2017 Buick Regal Transmission Fluid Capacity and Transmission Fluid Type
| Transmission type | Fluid capacity | Fluid type |
| 6 speed 6T70 Automatic Transmission | Total Fill 10 quarts (9.5 liters) Initial Fill 4.2 quarts (4 liters) |
AF6 |
| 2.4L LEA Flex engine 6 speed 6T40 Automatic Transmission | Total Fill 9 quarts (8.5 liters) Initial Fill 4.2 quarts (4 liters) |
AF6 |
| 6 speed 6T50 Automatic Transmission | Total Fill 9 quarts (8.5 liters) Initial Fill 6.3 quarts (6 liters) |
AF6 |
| 6 speed 6T45 Automatic Transmission | Total Fill 9 quarts (8.5 liters) Initial Fill 6.3 quarts (6 liters) |
AF6 |
| MR6 Manual Transmission | 3.6 pints (1.7 liters) | GLS36 |
What Kind of Transmission Fluid Does a Buick Regal take?
Buick Regal requires DEXRON VI fluid type. Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid that has been developed with advanced additive technology and meets and exceeds the requirements of General Motors DEXRON-VI specification.
