Quote:
Originally Posted by Mikem53
When the car is engineered for 0-20w oil.. It's more to it than just vi.
Adding zddp adds phosphorus above the 800 ppm that adversely affects the cats and emissions. More to it than someone's special oil mix. Maybe the engineers know a few things we should listen to.. Especially long term and warranty wise..
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I agree, and 0w20 oils tend to be high quality. Keep in mind that this oil was chosen for daily use, NOT for track and constant heavy engine demand! For this a heavier oil is recommended. Its always better to go with the lightest oil recommended for the engine if you just daily drive (including spirited driving... Not constantly at WOT).
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