Fully meets the Porsche rating. I have used Petronas Syntium 5W-40 3000 AV oil since switching from Mobil One 3 years ago. I find the Petronas oil to be very 'clean' in my 2004 2.7 Boxster. I purchased from Opie for the first time and I'm extremely pleased with the service. I've passed on Opie Oil's details to 2 Porsche 'buddies'. Porsche have changed their recommendation oil from 5W-40 to 5W-50 for higher age/mileage vehicles from this year. I change my oil every year irrespective of mileage. At 8.5L per oil change, I have enough for next year before I switch grades.