alfazagato
Silverstone
- Joined
- 3 Jul 2017
- Messages
- 103
Changed oil and filter a few days ago and used the same oil as previously installed Shell Helix Ultra 5W 40. That oil had been in the engine for some 2000 miles and 13 months. Previously on cold start-up the needle went straight to 5...now it goes to 4.5. However there appears to be no difference at just over 4 indicated at 3000 revs. Why the difference at start-up? I do recall that this oil is on the Porsche approved list.