Ungas,
In reference to your previous experience, would like to know if you were using Mobil Delvac 1 5w40 at 10k km changes? Were you replacing oil filters every 5K or 10k km? At what km reading did you start using Delvac 1? How often would you replace air filters?

Would like to see how much of an abuse the delvac 1 synth oil can take. Thanks.