What type of oil should I add to my 2000 Boxster? The oil level indicator is on the last notch above the minimum line so I thought I should add some. The manual says for 50 degrees or higher, Mineral 15 W-40, 20 W-50, or 20 W-40 or Synthetic 10 W-40, 15 W-40 or 15 W-50. For just everyday driving, which should I use?
When I do add, do I pour the whole bottle into the oil filler?
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