I heard from a friend of mine that the Auto Extra brand oil(Store brand for C.A.P. in my area also carry wix value line as their oil filters) is an ashland product. If that is true, I can assume its the same formulation as the wvb i have been buying at Chinamart. Has anyone done a VOA on this oil? Just wondering because they sound like a good value for their change deals especially if their filters are wix clones.