If you drive a Volkswagen car with a gear oil problem, it can cause major damage to the transmission of the vehicle. The gear oil lubricates the transmission and helps it shift gears correctly. If the oil is low or dirty, it won’t be able to do its job, leading to excessive wear and tear on the internal parts of the transmission. Without proper lubrication, the transmission can grind or slip and eventually fail completely, leaving you stranded on the side of the road. In some cases, you might even need to replace the entire transmission, which can be very costly.