Quote:
Originally Posted by red-beard
Honestly, the difference between the synthetics is minimal. There COULD be slightly different additive packages.
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There are notable differences in the base oils (PAO/Ester/HC/etc.), and add-packs, especially when you include all viscosity ranges.
But yeah, for most applications it's not a huge deal if you stick with a reputable-brand synthetic that is within your mfg. recommended rating/range, and keep sensible oil-change intervals.