Which engine oil ???

[Meir]

Originally Posted by shadrach74

No disrespect, but of all the opinions listed, this is absolutely the worst recommendation I've seen. I would never run oil that heavy unless I was running a car with 250,000 hard miles in Dubai...in the summer.

What is your reasoning for running oil so for outside the parameters of what Porsche recommends and moreover with a viscosity far beyond what your modern engine was designed for?

That's funny.
Looks like this subject always creates an argument.
I remember when I firs joined the forum I asked the same question.
Based on the answer I got, I decided to go with castrol 10-40. But I live in Florida
What intrigues me (and I'm still looking for an answe) is how come most of the people are using 0-40, when the owner manual is not recommending this option.
Yes, look at your manual and you will find out recomendetion for oil weights based on ambient temperature.
15-50 is on the list. 0-40, not.
So where did it came from
BTW you can find the same information in the Bentley book.