A transmission flush will not cause any damage to your car if carried out by a professional mechanic. The process involves removing all the fluid from the gearbox, which is a delicate operation. There are also some risks associated with performing a transmission flush yourself:
The wrong oil could be used
The old fluid is not entirely removed
The old fluid can become clogged if not removed properly
Flush chemicals could damage the transmission if not used in the exact proportions required and with the correct equipment
At Lamb’s Tire & Automotive, we do not recommend performing a transmission flush yourself. Instead, let the professional mechanics handle this meticulous and complex transmission service.