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My wife's new truck uses 0W-40 Mobil 1 as recommended in the owners manual. Service interval is 13,000 miles.... It's hard for me to believe (read: trust) some of this new-fangled stuff. <img src="/forums/images/graemlins/lol.gif" alt="" />
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Frank I can understand the new oil viscosity spec.'s. However i agree that 13000 and 15000 oil changes just does not make sense. I understand that the modern oils do not break down or wear out as easily but my question is what happens to the condensation, engine acids, unburnt gasoline and normal engine wear that is mixing with the oil during this long oil change interval?


Over the hill but still climbing.
88 Montero 2.6L auto, manual hubs, cooling fan conversion gps,recurved distributor,LSD Diff.