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Everything I've read is the motors come from VW/Audi and are identical..like I said the only thing I can think of different would be a tune. Still not sure why the difference in service though. I'll look up HP and Torque numbers and see how close the Cayenne and Q5-7 are.
 

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I do. The contaminates left in the pan are in your fresh oil within seconds of starting the engine. But it's your car. The other advantage to making sure it ALL comes out, it to avoid the electronic dipstick issue. Once you are positive that all the old oil is out, you can safely pour 8 new quarts of fresh oil back in. Subtracting the 0.3 quarts of oil that clings to the inside of 8 otherwise empty quart bottles, the actual amount you put in is the 7.7 quarts needed to get the oil level correct from the git-go.

//greg//
Ditto. I drain it out the bottom to make sure I get as much as possible.

Tip: I have a cheap ryobi cordless "impact gun" - using that and a 10mm socket (plus an extension for those two bolts way up inside) makes taking the bottom covers off a breeze - 5 mins tops: zip-zip-zip.
 

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Are u guys changing your oil every 5k miles or 10k miles? Curious as all of the VW TDI's I've owned all day to change oil at 10k mile intervals. And I believe the Audi Q5-7 3.0 diesels are at 10k miles. Curious why the same motor in the Porsche has to be changed at 5k miles? Thanks
My brother's theory is that the difference is... most Porsche owners will pay the ridiculous cost for a dealer oil change every 5K.

My 2014 Cayenne has 135K on it. I bought it from my ~70-something parents: They went to buy a Volvo XC90 and the trade-in offer was ridiculous (even by the ridiculous standard of trade-in offers). They told me about it and I said "Hell... -I'll- buy it off you for $1,000 over that!"

They bought it new and most of the mileage on it is from cross-country treks: they frequently traveled from their east coast home to their west-coast 'winter digs.' Dad drives in a 'spirited' manner, and especially when it was new I know he had it out pushing it on the twisties. After his first change (at the dealer), he did the rest himself and never changed the oil until 10K.

I'm telling you all that to tell you this: I've had a borescope inside, and it looks pretty pristine in there. No other indications of a 'problem'. Other than whatever they used at the first change at the dealer, it's always had Mobil 1 ESP 5w/30 in it.

I just changed the oil myself (1K after I got it, about 9K since last one), and the oil came out typically-diesel-black, but not otherwise seeming over-aged. Viscosity was good, no excessive particulates or metal shavings to note.

Granted, that's on a car with the VAST majority of its mileage from long-range highway driving. My 2c...
 

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Getting oil changed at VW . They use Castro oil not Mobil 1 . They are both 507 the right oil for TDI .
Does it really make a difference? I mean VW will do the oil change for half the price. Fuel filter, air filter, oil filter and cabin filter.
 

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VW Touareg manual says oil change every 10k . Porche has it at 5k . Only difference I see is the brand of oil. VW is Castro’s and Porche is Mobil 1. Engines are the same . Is this going to effect the Porche since I used Castro ? Need help guys. I’m thinking it is ok but you guys are more knowledgeable than me.
 
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