Time for my semi-ignorant question. The specs call for 2 (two) MB oil specs for our motors, doesn't it? If so, should both specs be applied as a filter for the approved oils, or will one OR the other be acceptable? I use Mobil1 0W-40 as listed in the manual and engine compartment but am very curious as this always has been an ongoing question/concern. My main reason for continuing to use it (besides the specs) if if I don't, I may be causing a problem for me with my LPW warranty in the future. This LPW is a huge asset for me unless they rule the interpretation of 'lifetime' as some arbitrary digit/mileage.


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