high mileage vs synthetic oil

[twistedsymphony]

A VX forum member posted link to this study a while back, can't recall who it was, but it certainly gives you clearer understanding of the differences between oil filters and confirms there are big differences.

http://people.msoe.edu/~yoderw/oilfi...lterstudy.html

thats the same article I posted earlier in this thread :P

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is there a reason you all use 10W30/40 as opposed to the 5W30 that the owners manual specifies?