Re: Does everyone actually use Mobil1 0W-40?
Originally Posted by
GraphiteGhost
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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The 229.5 spec is basically an upgraded list to the older 229.3 spec and includes many additional 0W-40 grade oils that were probably not available for the 229.3 spec testing, or were tested after the previous spec. You'll find the same changes going on with the 236.xx ATF trans fluids.
FYI - most Chrysler/Merc dealers in the south use Pennzoil 5W-40 as the OEM replacement for their dealer oil changes!
Last edited by syfi; Jul 12, 2015 at 03:56 PM.