No reason to be "emotional" about oil, just look for Porsche A40 approval printed on the container.
Some, including some mechanics, think they know more than Porsche, but they're mistaken.
And get some education so you don't write things like "lighter than 10W." 0W-40, for example, certainly isn't.
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Kent Christensen
Albuquerque
2001 Boxster
2007 GL320 CDI, 2010 CL550
2 BMW motorcycles
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