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2015 Q7 Requiring Oil Top Ups. Is that normal?

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2015 Q7 Requiring Oil Top Ups. Is that normal?

 
Old 05-07-2019, 07:58 AM
  #11  
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One thing to remember is that the type of driving you do also affects oil consumption. My '07 4.2 now has 92k on it and needs an extra quart every 5k. It had never needed to top up the oil in the first 8 years of ownership, but the last 5 years, my commute changed to a much shorter less than 15 minute one. Because of the shorter commute, my oil consumption has gone up, because the engine hasn't had as much time to warm up to proper operating temp, and my technician said that cold engines do have a bit of piston oil blow-by, because the metal in the engine hasn't had a chance to expand fully when the metal isn't up to operating temp. I'm not exactly sure I believe them fully, but they top off the oil for free, and I haven't had any issues from the burning oil, so I don't worry about it. My Mercedes E55 AMG does the same thing so I guess it could just be me and my lead foot.
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Old 05-07-2019, 08:00 AM
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Originally Posted by bspurloc View Post
1/2 quart at 5000 miles is normal for most cars. that is not what these others are seeing. the oil light doesnt come on at 1/2 quart low... its usually triggered at 2 quarts low which shouldnt happen at 5000 miles or 10,000 miles but apparently audi thinks so?
My tech says that the oil light will come on when it's down 1 quart, but to make sure not to overfill by filling 3/4 quart, and then checking the dip stick, which is a quart difference between the MAX and MIN marks.
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Old 05-10-2019, 12:33 PM
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Another culprit could be a small leak from where the oil filter housing connects to the engine block. This is rare, but happened to my 2013 3.0T (21 days after CPO warranty expired).
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Old 05-10-2019, 06:57 PM
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I am now at 85,000 miles and the oil top ups are becoming more frequent. I have extended Audi warranty until 100k and I have had the dealer look at it twice. Unfortunately they haven’t provided any solutions. I have my own theory. I think it is the seals that are resulting in the oil being burned. I doubt Audi will fix it since oil top up is apparently common with this engine. I was planning to keep this Q7 longer but I am now more inclined to unload it before the warranty expires. I noticed on the second generation Q7 has a similar problem (there is a thread on this topic) and I am hesitant to buy another one since it is the same engine.
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Old 05-11-2019, 06:48 PM
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2015 TFSI Sline, been doing this since I bought it with 37,000 miles!
First time the light came on I freaked and went right to dealer, where they told me it is normal. I said maybe for Audi, not for any other makers! She grinned like she didn't understand English, in the USA!
Between each change around 7000 in, it needs a quart. I typically go into the dealer and they fill it no worries, because it is normal. Excepting in Albany NY, that F**8cker charged me almost $9 for a quart and made me fill it myself! I told him in many words to get Fd.
I asked my dealer in NC if he would throw a quart in my car at the last oil change (66,000) so I would not have to stop in between fills and he did. These guys are great! I told him about Albany and he looked embarrassed for them.
My old 97 Yota 4runner had 290,000 and never needed oil and I changed it every 10,000 with Synthetic also. Such a shame, because everything else impresses me fully, including the 4 wheel off road capability, which I used with the greatest of ease today where a big ford truck tore up some tracks after being "Stuck" and people pushing him out.
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Old 05-11-2019, 07:03 PM
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I wouldn’t worry too much about having to add a quart in 10000. That’s better than having to remove one due to fuel dilution like some direct injection engines do in cold conditions. FWIW though, none of our four ever require any additions. Even the old 2001 TT that goes to the track a few times each year.
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Old 05-13-2019, 06:10 AM
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I see this thread is still alive. I’ve been vocal about excessive oil consumption in our A6 3T that stabilized at ~600miles/quart. As one major culprit causing it is mulfunctioning PCV, before throwing a towel I tried one more thing. I switched to LiquiMoly Molygen and Engine Flush additive before oil change. After first change oil consumption was more or less similar, 6 quarts/5000 miles. After second oil change/flush consumption was noticeable improved, 5quarts/5000 miles. After third cycle there is real breakthrough: 1900 miles and no oil light yet! I kept engine idling for 30 min with the engine flush and maybe pcv was cleaned more effectively. This is N=1 experiment, however, and no guarantee for others, but it’s worth replicating, and I encourage you to try.
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