I don’t know if you have been following the synthetic oil life study but if you have - I caution you to remember that the oil capacity of their engine is 6 quarts and 6.5 quarts have been added to the engine over the run of the study due to sampling. Also they changed the filter for a new one.
So one shouldn’t come to the conclusion you can run your engine on Mobil 1 for 17,000 miles without changing your oil.
So one shouldn’t come to the conclusion you can run your engine on Mobil 1 for 17,000 miles without changing your oil.