Quote:
Originally Posted by JCL12
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? 
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This is why I was confused. I read the manual and this is the recommended for Synthetic temp > 50 deg.
10 W-40
15 W40
15 W-50
Doing a search on Rennlist and this board the choice seems to be
0 W-40.
I also found this link from Imagine Auto who's a reputable sponsor at Rennlist. Also known for Supercharging Boxsters.
http://www.turbo911.com/showthread.php?t=279