Yup, ran the platinum as well oil sample thru blackstone and sodium numbers went down. Expected numbers seen in the castrol edge platinum. Hence, never going back to oem dealer bulk castrol professional.Don't know what the dye actually is. That's interesting about the high sodium. Have you ran a sample of the platinum through blackstone?
I've seen on a few forums folks are not bending over for dealer oil service or buying the professional for changes in between the 15K mile schedule. With Platinum being their choice. Most DIY folks on rigs this new do their homework. it has often been said that warranty work can not not be denied for not purchasing manufacturer exact spec oil if the oil used meets or exceeds the base specifications.