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Glenda S Rudisel
Glenda S Rudisel Posted on Jan 22, 2015
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Oil in coolant problems on my 2001 cadillac catera?

Car overheated and I replaced the radiator. Was going to get an oil change when I was told my head gaskets were blown. The reservior is filled with brown mucky substance and the oil is the same. I'm not adding much water or coolant but adding alot of oil. Now I'm checking my options.

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bill mcdonald

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  • Posted on Jan 23, 2015
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You have a leak in the engine allowing coolant to get in the engine or oil to get in radiator. Head gasket would be best guess. Pull spark plugs you will see one that looks different from the rest maybe 2 that is bad head gasket.

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  • Posted on Jan 22, 2015
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THIS IS WHY YOU SHOULD PAY ATTENTION TO YOUR GAUGES. OVERHEATING IS THE NUMBER ONE CAUSE OF HEAD OR GASKET FAILURE. THERE IS NO QUICK FIX NOW. THE DAMAGE IS DONE.IT IS TIME FOR A HEAD JOB AT THE VERY LEAST. WHEN WATER AND OIL MIX THE OIL LOSES ITS LUBRICATING ABILITY AND YOU MAY HAVE CAUSED FURTHER SEVERE ENGINE DAMAGE. HATE TO BE THE BEARER OF BAD NEWS, GOOD LUCK BILL

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Sounds like the head-gasket blew and allowed oil into the coolant and coolant into the oil. Unfortunately, it's time for a tear-down and rebuild of the engine.

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1answer

Oil in coolant problems on my 2001 cadillac catera?
You blew a head gasket no way a new radiator will fispx this issue !!!!!!!!
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Jan 22, 2015 • 2001 Cadillac Catera
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Oil in coolant problems on my 2001 cadillac catera?
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Jul 23, 2011 • 1998 Cadillac DeVille
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Engine runs rough also how can you check to see whether if i have a blown head gasket. it also has no fans running to cool the coolant
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Running an engine with no fan to cool the radiator is a common cause of blown head gaskets. yes.
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Jan 21, 2011 • 1997 Cadillac Catera
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Cant find thermostat
Most likely the heat warped the head allowing the head gasket to blow out. The head will have to be removed and checked out.
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Jul 16, 2010 • 1998 Cadillac Catera
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My 2000 Cadillac Catera is has water mixed with
Oil cooler under the intake plenum at rear top of engine is either bad or the gasket is gone. If you take oil filler cap off, you will see the paste on the cap. Are you going through coolant every so often?


Same as on my wife's 01.
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May 13, 2010 • 2000 Cadillac Catera
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We have a 2000 Cadillac Catera the Radiator has
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Mar 10, 2010 • 2000 Cadillac Catera
2helpful
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Where are the hoses that run to radiator to cooling system located? send diagram. Oil went into water tank on 1998 cadillac catera
I don't have a diagram, but your problem is the oil cooler underneath the intake on top of the engine. Remove the intake, and the cooler is right there in between the heads. Easy to change once you get the intake off. This is a VERY common problem on Cateras, and the symptom of it is oil in your coolant. I have a 1998 Catera and had the same issue.
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Aug 03, 2009 • 1998 Cadillac Catera
1helpful
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Oil in coolant
This would indicat a bad head gasket.
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May 12, 2009 • 2001 Cadillac Catera
6helpful
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2001 cadillac catera: oil in coolant?
The Problem, My friend, is a leaking oil cooler. this item is mounted, inside the engine, under the intake manifold. The cooler or the connections are bad. Coolant flows through the cooler, if it brakes then the oil will contaminate your coolant and make a mess.!! Have it checked. Must times is the seals at the pipe to cooler flange connector. will need new seals.. Hope this helps.
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Dec 20, 2008 • 2001 Cadillac Catera
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