Ugggg!
I just played "pick the oil" with my dealer on the phone.
According to them, they use 5W-40 as thier standard for porsches - and we are located in the frigid areas of upstate NY.
-Is the a major need/lubrication benefit from 0W-40 over 5W-40 for extremely cold weather??
-My porsche manual (IIRC) does not say to use 5W-40 and it does not even list 0W-40 - I think it advises 10W-40! The mobil 1 website tells me to use 0W-40. My dealer says use 5W-40. What the heck?
