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  1. 2008-2013 CTS General Discussion
    Recently, I purchased a 2011 Cts Coupe (3.6l rwd). I installed new spark plugs and ignition coils. During the installation I noticed that the spark plug on the driver side rear cylinder had oil covered on the end of the plug. I am not sure how long the previous owner had been driving the car in...
  2. XT4 1st Generation Forum - 2019+
    Just bought a 2019 XT4 with approx 7K miles (dealer loaner). When I first checked the oil (first gas fill-up after purchase) the oil was off the bottom of the dipstick. I added a quart of Mobil 1 0W20 and it brought it up into the range. Now, about 2 months after my "free" dealer service oil...
  3. Seville and Eldorado Forum
    Hello! I'm not very good at classic cars! This is our first retro car. Friends please help pick up oils and fluids for this car... Engine, transmission, axles, antifreeze ... In your opinion, how often do you need to change fluids in this car? I'll be very grateful! Thanks! Engine: 425 CID V-8...
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