15W-50 vs 10W-30 which should I use?

[frederic]

Hello.
I've already switch to 5W50. It's on the Porsche approved oil list for Boxster.
Take a look at this renntech post.
5w50 renntech post

[joshua6060]

What about a Mobile 1 Oil that is available in the United States?

[paulv]

Originally Posted by joshua6060

What about a Mobile 1 Oil that is available in the United States?

Mobil 1 0W-40, as others have mentioned already. The approved list also has a Mobil 1 5w-40, but I've never seen it available in the Boston-area stores. There are no xW-30 oils listed.

Regards,
paul...

[blueillusion97]

+1

0w40

[jderiansf]

When the dealer changed the oil, they put in M1 0w-40.


Jason