I brought my german performance vehicle in to have an oil leak checked out. Chris told me that my bi turbo chargers were failing, and were both leaking. He expected them to blow within 6 months. It has been 8 months and 12,000 strong miles (I horse the vehicle a lot!) and my turbo chargers run really good, and boost hard, no issues at all. The oil leak ended up being the banjo fitting to one turbo, and a valve body leak (diagnosed by two other shops). On a second occassion, where I thought they couldn't mess up an AC diagnosis, they told me my Compressor was not getting voltage and that it was leaking refrigerant. They told me that the whole system MUST be replaced. I thought this seemed a little off as the refrigerant had good levels. I took it to two other shops, and they both told me the same thing: The compressor is getting fine voltage, is not leaking, and is just inoperable.