In this video I do another piston soak with B12 Chemtool on an Audi 2.0T - this time in a Q5. The vehicle was burning 1L of oil for every 500km, which is extremely high.

After the piston soak with B12, the vehicle has stopped burning oil and is now well above the manufacturer specifications for oil consumption.

Updates and notes:

1. Multiple viewers have reported a successful reduction in their oil consumption after a piston soak on 2.0T and 3.0T motors.
2. A user reported multiple misfires as a result of the piston soak. I experienced misfires on both my A4 and Q5 after the hard starts seen in this video. In all three cases, pulling the plugs an cleaning them up has resolved the misfires. It would appear the plugs get fouled due to the excessive burn up of soot immediately after the piston soak. As a result, after draining the dirty oil, I replace all plugs with new ones. The same may be applicable to the injectors although no injector issues have been reported so far.
3. Multiple viewers have asked about alternatives to B12 as it may be hard to source in various parts of the world. Any solvent which is safe for the engine should work fine including diesel, engine flush, Sea Foam etc. B12 appears to be the strongest one but I am sure there are plenty others that can do the same job. I used Sea Foam and STP engine treatments to fix my A4 so they have been tested.

DISCLAIMER

This video provides general information and discussion on the topic of piston soaking an engine and reducing excessive oil consumption. If you choose to try this method on your engine you do so at your own risk. This video and the information included in it are not intended to serve as a substitute for a consultation with a professional mechanic. Under no circumstances will Eurotrash Motorsports be responsible or liable in any way for any content, including but not limited to, any errors or omissions in the content, or for any loss or damage of any kind incurred as a result of any content communicated in this video, whether by Eurotrash Motorsports or a third party.