I have oil leak that other places were describing as significant. I called 20 places to get my engine cleaned. Nobody wanted to do it. Bock told me to bring it in. He calmed me down and was able to quickly clean the engine, then he put the dye in the oil line. I'm bringing the car back in a few days. I asked Bock if he wanted a deposit, and he said not to worry about it. The guy has no reason to trust that I'll return to finish the job... but of course I'll be back. Thanks.