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JFP -- Thank you. That makes sense.
Interesting advice on Tehron. I only use Top Tier gas -- Chevron or Shell. But I stlll don't have a clue as to why a fuel additive would impact oil consumption in a direct injection engine. It may have something to do with Yash's experience after some spirited driving. I did more than usual in the 3 hour round trip from Tuson to Phoenix and back -- but even there I don't get the connection.
Bought my 2009 Carrera S with PDK used, with 25,000 miles and 4+ years driven by the original owner. I live in Tucson and use the car as a daily driver with once a week short freeway blasts. I have watched the oil useage carefully and get about 1,500 miles per quart or 1,600 if I push until the low level indicator flashes. This has been absolutely consistant since I've owned the car, regardless of the weather; and, to eliminate any other variables, I only use Mobil 1 synthetic 0W40. A month after my 40,000 mile/6 year combined service, I noticed there were no fuel system or injector cleaning items on my invoice. After talking to the service writer, I bought a can of 44K from the dealer parts department, put it in a nearly empty tank of gas, filled it up and went on two 11/2 hour freeway trips. I probably did a total of half a dozen hard, short blasts during the combined trips. Subsequently I noticed that my oil useage had slowed. Watching it carefully, I found my useage had jumped from 1,600 max to 2,150 per quart. I'm not complaining, but this makes no sense to me especially with a direct injection engine. Can anyone add any insights?
So far 155 but I didn't want to attract attention.... Is that like stealing it?
Troops -- I bought a 2009 Carrera S with PDK in May 2013. Prior owner had it 41/2 years; it now has 61/4 years and 41,000 miles. Prior owner sold it with a 3 year transferable Fidelity Platinum after-market warrranty, so I've got 1+ years remaining. Always dearler serviced, no mechanical problems -- like the used car ad says, "Runs great!" Mostly city driving, never tracked, BUT each week when I drive to the go-kart track to practice or race, the speedo seems to read 110 -- 120 on a short link of freeway (for the CHP, I am sure this is in kph....). Did I say I really like Froggy this car? Bottom line: I've about decided to keep Froggy (yeah, it's dark green) for the "long term" (since I had my first 356B while in Germany with the Army in the mid 60's, long term is relative). Being a bit obsessive (hey, I'm a Porsche owner), I've read through the Renntech and 6speed forums for hours looking for significant reliability issues. Yes, my PDK can sometimes be a bit ackward at low speeds. Yes, I know a small number of early PDK's had some computer wiring problems that led to a major mechanical failure of the transmission. Yes, I know some folks are concerned about possible valve deposits due to direct injection. And yes, I know there have been hot topics like the glove compartment light! But I honestly cannot find anything that causes me the least concern with either the Gen II engine or the PDK. Added to this is the JD Powers 2012 three year report on the reliability of 2009 cars. Porsche, as a manufacturer, finished 2nd (Buick was #1 but I'm not going there -- in spite of my age). In addition, the 2009 911 was identified (along with 3 other models from different manufacturers) as being particularly outstanding. Soooo, does anyone know something that I don't know or would you also say it's a keeper?
Troops! And I use that salutation 'cause I bought my first Porsche (356B) while I was a young frog Army officer in, then, West Germany.... Last May I bought an '09 Carrera S from a fellow in CA. It had 'bout 25,000 miles on it over a 3 1/2 year period; I've had it for another year +, and it now has 35,000 miles -- all in Tucson, AZ. He had XPEL (I assume similar to Clear Bra) applied at purchase and then reapplied at 20,000 miles. I couldn't be more impressed. Except for touching (it has an almost rubbery give to it) I wouldn't have know it was there. You may have noticed from weather reports that Tucson can be warmish. No problems with yellowing or any other discoloration. Very protective vis-a-vis rocks, slow bugs, tumble weeds, et al. I never would have put on any kind of film myself due primarily to my ignorance on how far that niche industry has evolved. And XPEL will even sell you a quality wax (probably just a good synthetic) that works on their film as well as paint/clear coat. An old dog can learn new tricks.