I have a Porsche Boxster with a "new" IMS bearing and have Motul 8100 X-cess 5W40 installed. Car is driven monthly & I am trying to determine should I change oil by millage or by time in engine.

  • Welcome to Motor Vehicle Maintenance & Repair! If you follow the maintenance schedule, you shouldn't have an issue. Most maintenance schedules tell you to change it on either mileage or time, whichever occurs first. Jan 11 '18 at 0:24
  • See this as the topic is similar : engineering.stackexchange.com/q/18834/10902
    – Solar Mike
    Jan 11 '18 at 1:02
  • You can follow the schedule parameters as given or you could get your oil tested as per the other question...
    – Solar Mike
    Jan 11 '18 at 1:04

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