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Everyone has their opinion on Natural Oil verus synthetic. I'm sure the ads could say their lubricant would maintain it's state for XXX number of miles or months.
Several have talked about filters. Remember the oils will only hold so many solids and impurities. After that they are just dirty lubricants. Changing the filters may be the most important thing in this discussion instead of the kind of lubricant used.
I'll stay with my 5000 mile, $49.00 change by my dealer and Dodge can't say a thing.
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