Cadillac Seville STS Problem Report
Cadillac Seville STS Excessive Engine Oil Consumption
Vehicles equipped with the 4.6L engine may develop excessive oil consumption. Please be advised that under optimum driving conditions, using one quart of oil every 2000 miles is acceptable. This Cadillac standard applies to vehicles with less that 50,000 miles. Our technicians tell us that if you experience excessive oil consumption it may be caused by built up on the piston rings which restricts movement, preventing them from wiping all the oil from the cylinder walls. Oil left behind is then burned during the combustion process. There is a special ring cleaning procedure which can help this situation. The GM service bulletin number is #02-06-01-009C.
cas sucks oil smakes bad and dealer did nothing this car burned oil sene new and leaked also run hot now needs head gaskets due to gms fraud on the public we need to sue for this my car has 108k and itsalways ran hot used oil and now needs new engine caue of gms scam they need to be sued for this fraud - cadillacsts
I've been burning 1 qt/tank of gas for the past 100,000 miles. I can now smoke out anyone behind me if I stomp the gas a bit. - Visitor
Cadillac Seville STS was almost out of oil ("Check Oil Level" status message came on) after a 380 mile highway drive. Oddly, there do not appear to be signs of significant oil leakage under the car. Other than this the car runs perfectly. Wondering what "normal" oil consumption is for this car (considering its price and luxury status). - Visitor
oil comsumption; smell burning oil, but not all the time. - mona0422
Excessive oil quart every two weeks - Visitor
Uses 1 quart every 900 miles. I just bought the car with 83k. Took it on a 2500 mile trip and needed 3 quarts. I tried the flooring it cleaning method but didn't seem to do the doing the trick. No leaks noted in or under the car next try the piston clean as noted. - Visitor
Occasional full throttles helps cure this problem almost all the way, once a week should be good. - Visitor
i need to add a quart every 1,000 miles,
no oil leakage - vics caddy
GM replaced all pistons with teflon coated pistons under warranty - Visitor
my cadi seems to use "ALOT" of oil, although we haven't noticed it coming out from exhaust, or excessive leaking. - Visitor
Dealer indicated within specs. Just learned of the cleaning procedure prior to this website, thinking of trying. Has anybody else had success with this service?? - hutch2010
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