My worn 1998 Honda 2.3 L would just drink Mobil 1 5W30. I have faulty valve guides where I always burn a bit on start up. With M1 it would shoot it out the tailpipe unburned when driving around town (perhaps it's the high flash point). This oil got black very quickly suggesting this thin oil was scavenging gunk built up from years past, probably from that time I inadvertently ran very low on oil, it had baked on some non synthetic that was hard to dislodge. I switched to 10W30 Castrol Syntec with a bit of Redline of the same grade, and oil consumption has dropped dramatically, I can't believe how clean the oil looks after 700 km as well. I also think I fixed a stuck ring with multiple Amsoil Powerfoam piston soaks. Both problems have been stubborn, and not things I had been able to address quickly with anything in a can.