2008 Cadillac ESV overfilled with oil by dealer
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Cadillac Escalade, EXT and ESV Forum - 2007-2014 Discussion, 2008 Cadillac ESV overfilled with oil by dealer in Cadillac Escalade Forums; Looking for advice. Recently had my wife's 2008 Cadillac ESV in for oil change. No issues noted during visit. No ...
  1. #1
    anonimaus is offline Cadillac Owners Member
    Automobile(s): 2008 Escalade ESV
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    2008 Cadillac ESV overfilled with oil by dealer

    Looking for advice.

    Recently had my wife's 2008 Cadillac ESV in for oil change. No issues noted during visit. No unusual oil leakage noted. Mileage is approximately 107,000.

    About 600-800 miles later I noticed oil in my driveway. I initially thought it was a bad oil filled shock, as the check suspension light had just come on. This is something that happened in the past. Shock wasn't where the oil was coming from.

    I started looking around, and noticed it was actually several spots of oil on my long driveway. Somewhere around a pint to a quart total. After looking under the car, it became clear oil was coming from around seal on sump and somewhere on the engine. Checked the dipstick, as I wanted to make sure it wasn't too low. Found the level approximately 3/4 inch to 1 inch above the maximum mark when cool. Not counting the oil on my driveway. My wife drives the car, so I don't know if any of the oil lights or warnings came on. She isn't the most reliable at making note of these types of things. However, there was no evidence of foaming out of the dipstick, which I would expect if the crankcase were submerged.

    Dealer put dye in the system and stated seal on sump had to be replaced, and the engines rear main oil seal had to be replaced. Expensive job ($2200). Categorically stated couldn't have been from a "little overfilling" of 1 qt. or so he said was extra. Don't know exactly how much it was overfilled, as I wasn't standing there when they drained it to get it to the right levels. Other than what the dipstick looked like. The dipstick has five holes in it, and it appears they probably mark 2, 3, 4, 5, and 6 qt marks. Using the spacing as a guide, it looks like I was somewhere around 3 qts high by the dipstick. Not counting what was on the ground.

    Not real comfortable with the answer, as it seems a bit of a big coincidence. But I have otherwise had pretty good service from this dealer. Any thoughts on whether the overfilling 1 (dealer estimate) to 3.5 qts (my estimate) is the culprit would be appreciated, as I haven't decided whether to make a big stink about it yet.

    As a ps., there was a bad shock, which is what caused the suspension light to come on.

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  3. #2
    MrHolland's Avatar
    MrHolland is offline Super Moderator
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    Re: 2008 Cadillac ESV overfilled with oil by dealer

    I don't think over filling you crankcase by 50% would cause leaks. I imagine if a gasket is going to leak, it will leak at what ever the level is, with in reason. In that scenario, a bigger concern for me would be cavitation or aeration of the oil. Its going to be tough to blame this on the dealer since, I assume, you didn't check the oil when you picked up the car. JMHO

  4. #3
    anonimaus is offline Cadillac Owners Member
    Automobile(s): 2008 Escalade ESV
    Join Date
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    Re: 2008 Cadillac ESV overfilled with oil by dealer

    Thanks for the feedback. Didn't see any evidence of aeration/cavitation/foaming, but I don't normally drive the car. I agree about checking the oil. Would normally do it if brought to a quick lube place, but didn't at the dealership. Should have followed Rule #1: Idiots are everywhere.

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