Got to agree with Brad on this one, Mobil 1 products have been going downhill since Exxon bought them in 1999; and the slide accelerated about 4-5 years back after they lost their legal battle over the rights to the “full synthetic” terminology and began reformulating Mobil 1. Group IV products became Group III+, then Group III and so on. Several of their Mobil 1 grades lost their ACEA ratings entirely, others just fell off a cliff in their UOA results. What used to be an industry leading product has become a cash cow for Exxon……………
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