So Mobil 1 0/40, 5/40, and 5/50 are cool?

 

5W/50 is recommended in the Cayenne. I use it sometimes to top up my 02 C4S.

 

I do not see 50 anywhere on the list, just 0W-40 and 5W-40

FWIW I run Mobil 1 5W-40 for turbo diesel trucks (Delvac) and change at 7,250 miles. It can be purchased for ~$23 a gallon at Walmart.

 

Clean your glasses.

 

Ah! I see it now!

 

>>So Mobil 1 0/40, 5/40, and 5/50 are cool?<<

Yes, but which one is better?

 

so why did rennlist people "settle" on 0/40 v. 5/40 or 5/50?

 

For me, the answer is simply that it's what my mechanic as well as a couple other shops, including the local dealerships, recommended.

 

Me too. Mechanic recommendaton + the logical explanation in the Excellence writeup a couple months back = much more confidence than betting my engine on the outcome of an internet bunfight among perfect strangers.

 

You can find the most recent approved oil list for the 964 and 996 HERE.

 

Sounds pretty straight forward to me. 0W40, 5W40, 5W50 - full synthetic. Intervals seem a bit long, twice per year seems sensible.

Thanks for posting this question. I was going to do it, but I had heard there is controversy. Don't know why though. Is someone saying that the 0 weight oils leak out of 996 engines ? I know synthetics leak out of the air cooled cars, but these are ENTIRELY different animals.

Also...If someone here is arguing that they use 15W50 because that's what they ran succesfully in their air cooled 964, then that person (careful how I say this now - I don't want to offend anyone) is an idiot.

 

I’m not sure why there is any debate. Is there not definitive evidence of which oil is better for a peculiar engine for most driving conditions? How big is the difference between 0W40 & 15W50 oil anyway? Is it significant enough that damage could occur just from using one rather than the other? Isn’t the change interval infinitely more important? Or is it so much fun that people just can’t resist?

 

People, this is science, not religion. Aside from running your own tests with multiple oils and multiple vehicles, you can learn a lot from a Google search. BUT:

1) you have to put very low confidence on tests done by anyone with a financial interest in the outcome.

2) completely ignore single point of information anecdotes (including my mechanic says, or Taxi runs for 3 million miles on maple syrup)

3) try to find corroboration among the few remaining tests.

Now, somebody else do it, it is too much like work for me.

 

That is correct sir! (although vehicle is spelled wrong )
The arguments do provide some entertainment.

 

Not spelled wrong any more!