[DreamSign]

Originally Posted by paulofto

Porsche has a standard that any oil they recommend has to meet and it is designated ‘A 40’

Here is an A40 list from a couple of years back.

https://static.nhtsa.gov/odi/tsbs/2019/MC-10166908-0001.pdf

I hope this helps.

Thank you for the info. I noticed that their recommended ranges of 5w-40 to 0w-40 say nothing about ambient temperatures...