oil?

[tyeo86]

What oil do I put in a c4s 996 2003?

[tracydeedance]

When I had a 996 C4s I used Mobil 1 5/40 fully synthetic
Porsche opc would use Mobil 1 0/40 fully synthetic

Both are fine to use but personally i would go for the 5/40

[F3RNANDO]

0W40 Mobil 1
Unless you live somewhere hot or do oodles of track work where maybe 5W50 or 10W50 would be better.