Wow that is a great deal, on this side of the border I pay almost $9 per litre (about a quart)

 

Mobil just in the US. It's a marketing thing for Mobil. In Germany, they use something else.

 

In case anyone is interested, here is the "official" Porsche approved oil list :

 

My local Costco sells 5w30 But I have never seen 0w-40 or 5w-40 at Costco which are the required oil weights for our cars.

 

Yes, I just bought two quarts of Mobil 1 [0W-40] there.












1,002 miles down... 998 to go.

 

Every Costco is differant some have none, others have both and some only have the 5w-40..The new one in Tustin has both.

 

Someone else beat me to posting the approved oils list. There are other approved brands besides Mobil, Mobil just happened to pay enough to have their sticker by the oil filler tube. All marketing as someone else said.

 

Looks like Quaker State, Pennzoil, Valvoline, Red Line, Royal Purple, Amsoil and so forth are not approved with their synth oils. In the USA looks like we can use Mobil 1, Castrol, Havoline, Kendall and that is it. Hummmm.... Looks like more N Spec tire BS. If the synthetic oil meets the viscosity requirment and SAE grades then the other brands mentioned above would too. Seems like Porsche marketing again.

 

Many of these cars use oil during break-in. 1 quart for the first 2,000 miles is not unheard of. After break-in, things seem to ease a bit.

I've also heard of oil burning being minimized through the use of heavier weight oils - like 5w-40 rather than the 0w-40 as recommended.

 

All three of my 911's used oil when new. I use my 997S as a daily driver. I make frequent short trips. When new, I was adding a quart every 500 miles or so. I now have 40k miles, and I don't add oil between changes. I was told that it is common for 911s to use oil when new due to the horizontal position of the cylinders. Some small quantity of oil will pool in the cylinders, and that with each engine start will burn off. Not quite sure if this is a good explanation, but at some point, all three of my cars stopped using oil.

 

I'm not sure how oil consumption can be changed by using a 5w-40 over a 0w-40? They are identical when warm - the second figure, the '40', defines the viscosity at operating temperature (Higher = thicker). The 5w-40 is just a bit thicker when cold than the 0w-40 and both are a lot thicker cold than warm! (Yes, you guessed it, the 1st figure, followed by the 'w' defines how viscous the oil is when cold. Lower = thinner)

One or two of the less well informed on here have suggested using 5w-50 oil. This is thicker (i.e. more viscous) at operating temp but is consequently harder to pump around the engine thus losing you power. It can also potentially starve the bearings etc. from oil flow.

With modern-day engine tolerances, it is critical to follow manufacturer advice.

Regards

 

5W50 is an oil that approved for use by Porsche, so for those who MUST follow what Porsche says, using 5W50 is fine. 5W50 is as much recommended by Porsche as is 0W40 and 5W40 and works fine in Porsche's "not so close tolerance" engines..

 

The oil weight has always been changed, according to where the vehicle is being used.

10W-40 should be used in New York [20s in the Winter/80s in the Summer] for example...

While 20W-50 should be used in Florida [50s in the Winter/90s in the Summer].

Yes... thinner oil might save a few MPG, but that is not why I bought a Porsche!


0W-40 in Florida AND in Minnesota?