Question about 1997 Cadillac DeVille

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Disappearing oil 1997 Cadillac Deville uses 1 quart of oil per 1,000 miles. It's not on the floor under car & is not smoking at exhaust. Also it is not in the coolant system. The car only has 53,000 original miles. Where does the oil go?

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  • Anonymous Mar 13, 2014

    water in the oil and the car wont accerlerate over 25 miles hr

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  • 157 Answers

It is burning it, and it may be sticking to the inside of the exhaust system, like the cat converter and muffler. Look at the exhaust when you start it from cold, and take a little sniff.

Posted on Jul 28, 2009

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Posted on Jan 02, 2017

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Please help; my Cadillac Concours 1995 use fuel ? tooooooooo much in 100 km use ? 35 liters (9 gallons) without any smoke or missing. What is problem and how can I fix it????


Cadillac DeVille Mileage ' Fuelly

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Edmunds.comFeatures and specs for the 1995 Cadillac DeVille including fuel economy, transmission, warranty, engine type, cylinders, drive train and more.Missing: 100km

Cadillac history 1997 - Motorera

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History of Cadillac automobiles for 1997. ... 1997 CADILLAC DEVILLE ... Fuel Economy City/Hwy, 13.8 l/100 km - 9 l/100 km (20.4/31.2 mpg-imp) (17/26 mpg US).

Jan 25, 2016 | Cadillac Cars & Trucks

1 Answer

My 1997 cadillac deville, northstar w/85, regular oil changes, burns almost 2 quarts of oil every change. It is not leaking.


If your car is losing oil, and if there is no evidence of oil leaking, there is no question that it is either losing it through piston rings or through the head (head gasket or valve guides).
Best thing to do is use a HEAVIER WEIGHT oil than specified for the vehicle when new, regularly monitor your oil level and be sure it never falls below one quart low, and consider having the engine overhauled when you start noticing a performance deficit or hear mechanical noise (such as rod knock) from the engine.

Apr 18, 2014 | 2003 Cadillac Deville

2 Answers

Loses qt of oil per week. No leak shows underneath car and does not smoke


It can easily burn that much in a 100 miles without seeing any smoke.
If you check the spark plugs you may find evidence.
It can also leak while the engine is running and not when it is off. Most Northstar engines leak to some degree.

Sep 05, 2012 | 1997 Cadillac DeVille

1 Answer

Uses oil ,no leaks


check for a stuck or gummed up PVC valve,it should rattle when you shake it. check for worn piston rings; with someone observing from behind start at bottom of steep hill accelerate quickly from a stop, if worn rings, blue smoke will be seen from the exhaust.

Aug 02, 2012 | 2002 Cadillac Deville

2 Answers

Think I may have overfilled my oil in my Cadillac Deville 98. What would be the symptoms, and is it fixable?


usually no immediate symtoms,but it can cause oil to get past the piston rings,causing it to smoke,and/or blow oil seals in the engine.how much over is it?the space on the dipstick between ADD & FULL is about 1 quart.if its overfull by a quart or more,drain some out,or take it in for an oil change.they'll drain it all and fill it properly.

Sep 21, 2009 | 1998 Cadillac DeVille

3 Answers

Oil disappearing with no visible leaks and engine not using oil.


Check out this thread and take your Caddy for a couple of Wide Open Throttle runs on the Interstate. Clears out the carbon buildup on the rings that is causing oil blowby.

http://townhall-talk.edmunds.com/direct/view/.f1078f6/0

Nov 21, 2008 | 2002 Cadillac Deville

2 Answers

Vectra c 2.2 sri oil problem


Per previous post. A quart in 750 miles would be extremely high.  A Porsche 930 Turbo Carrera driven hard doesn't use this much unless it's motor is toast, and it is practically a race car.  You should expect at most a quart of oil consumption for 3000 miles.  A quart of oil in 750 miles is a quart EVERY OTHER tank of fuel, and would indicate a motor that needed a rebuild long ago (or seals, guides or rings).  BTW, If you can see smoke in the read view, it looks much worse when someone is driing behind you.  STP or changing to the next higher weight of oil are short term solutions that may help you not leave a trail of smoke.
If you need valve seals, maybe that's it,  but if you need guides, the rings are probably near shot too, unless there are extenuating circumstances.
cheers,

Oct 24, 2008 | 1997 Acura CL

1 Answer

1997 Cirrus burning oil


the piston ring are sticking go to the auto part store get and additif for stickie ring its gonna help thank you from from montreal canada

pierre

Jun 23, 2008 | 1997 Chrysler Cirrus

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