Generally speaking, it’s a good idea to get a transmission flush every 30,000 miles or every two years, whichever comes first. However, depending on the age and condition of your transmission and other factors such as how you drive and how well you maintain your transmission, there may be times when you need to get a transmission flush sooner. If you recognize any of these common signs, visit a transmission shop in Rockville, and Bethesda for a transmission flush service. 
Problems Shifting Gears
Regardless of whether you drive an automatic or manual, problems shifting gears is an indication that the transmission fluid contains too much dirt or sludge which is causing a sluggish response in the gearbox. For automatic transmissions, you may notice that the vehicle changes gears faster or slower than normal. In manual transmission vehicles, you may it very difficult to change the gears at all. In either case, visit a transmission repair shop to find out if a flush is the answer to the problems you are experiencing.
Vehicle Surging
Another tell-tale sign of a transmission in need of a flush and fill is unexplainable surging of the vehicle. Transmission fluid that is very dirty or full of sludge does not allow for adequate flow through the transmission, which can cause the vehicle to surge forward for no good reason. This problem is usually most noticeable when the vehicle slows down and comes to a stop at a light or stop sign.
Dirty or Burnt-Smelling Transmission Fluid
As a part of maintaining your vehicle, get in the habit of inspecting the transmission fluid on a regular basis. If the fluid looks very dirty or smells burnt, visit a transmission repair shop in Silver Spring, MD for a flush service so you can have fresh fluid added for optimal performance, lubrication, and efficiency.