Question about 2003 Cadillac Deville

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

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

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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.

Posted on Apr 18, 2014

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Burns quart of oil in 5,000 miles and dealer says its normal. Bought used as certified used car-only 45,000 miles


Depends on make and model. Cadillac Northstar engines often use a quart between 3000 mile changes, and this is considered normal.

Jun 04, 2015 | Cars & Trucks

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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

Have an oil change every 3000 miles by about 2000 miles it is allready a quart to 2 low and there is no visable oil leak


What you describe is normal for the Northstar engine, they do tend to burn oil.
It sounds a lot but by contrast, consider that BMW recommends checking the oil level every time you fill up at the gas station on some of their models (M3,M5 etc).

Aug 29, 2010 | 2001 Cadillac Sts

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I have a Cdillac Deville 98 northstar. Getting an Error message - Engine overjeat, Change Engine oil, Check Coolant level and later I get Idle engine message I changed engine oil and coolant recently -1500...


Whatever you do, NEVER allow this engine to overheat and always use the correct antifreeze (DEX COOL) or you will damage your heads severly. The heads were made from aluminum so there is a very serious warping issue on the 1998 Cadillac Northstar engines. There should have been a recall but wasnt, ended up costing me 3 thousand USD to fix the engine problems I had but she now runs fine. I only had the car 4 months before this happened so someone prior to me owning evidentaly let it overheat on too many occassions and I had no choice but to fix cause I was still paying on the car!! Good luck

Jul 12, 2010 | 1998 Cadillac DeVille

1 Answer

Why is my car leaking oil its a 1995 cadillac deville sedan with 108k on it


well, oil seals get old and an engine is still considered to be good, according to what I have read on the Internet, if it consumes less than 1 quart per 1000 miles.And, one should change the oil every 3,000 mi. according to most reputable oil change garages.

Granted if it's leaking any oil, that is not ideal.

Rubber seals and gaskets can get oil soaked and spongy or tightness of bolts that hold gaskets on can be too loose (but I wouldn't overtighten bolts as they only go in so far)..

May 09, 2010 | 1995 Cadillac DeVille

3 Answers

My car isn't leaking oil but I changed the oil about 2 weeks ago and went to check it and it was bone dry; also having a problem with the right head light low beam, changed the bulb also the harness wire....


If the car is smoking through the muffler then its burning the oil if not, check for a loose engine filter or leaky oil pressure sensor that leaks only when the car is running.

Apr 28, 2010 | 2001 Cadillac DeVille

1 Answer

HOW MUCH OIL GOES IN A 2000 CAD DEVILLE, 32 VALVE NORTHSTAR? i PUT IN 5 QUARTS, AND ITS BARELY REGISTGERING


It's going to take about 7.5 to 8 Quarts. All Northstar engines are like that, so no worries.

Mar 22, 2009 | 2000 Cadillac DeVille

3 Answers

Oil leak


Northstar engine, that's about right. They do take about 8 quarts.
The most common place they leak at is at the oil filter housing that attaches to the block of the engine.

Mar 19, 2009 | 1998 Cadillac Catera

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