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Oil
Hi, so I have a question. Does it matter what oil I put in the 821??? Every single dealership I've spoken to uses something different but sticker on the engine asks for shells oil.... would it invalidate warranty if I were to stuff either motul factory or petronas or Mobil 1 fully synth double ester in??? I'm calling bs on the tyres and am having 180/55/17 fitted to the rear..
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