Previously, I used self-service, the quality of chemistry and pressure was fine. Now I've switched to the tunnel. It saves a lot of time and the quality is good for such a speed, because you don't even need to get out of the car.)
A good car wash, I have been using it for a long time both as a sink and self-service, depending on what time I arrive. There was one period of chemistry change, I had to talk to the staff, after that there are no complaints. We must pay tribute to the managers, they maintain the quality of the sink due to good chemistry, therefore there is a constant demand for their services. One sink from my few personal list, which boasts quality. On the 31st, I stopped at the self-service post at 20:30 there was no queue, I did not like one moment, the pressure on the gun was lowered, the time for flushing chemicals increased accordingly, but overall I was satisfied with the price-quality ratio.