Question about 1997 Cadillac Catera

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1998 Cadillac Catera can't tell if it is the engine oil cooler or a headgasket but oil is mixing with coolant and coolant and oil, what would be a sign if it is engine oil cooler

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If you have a head gasket problem, you should see dense white smoke coming out of the exhaust pipe if you have antifreeze (ethylene glycol) in the cooling system, especially right after starting the engine.

Posted on Apr 29, 2010


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I have a 1998 Cadillac Catera. Oil is going into the radiator. Water is not in the oil, only oil in the water. I have flushed it but the oil level continues to go down and the water continues to get...

Hello: The oil cooler is not in the radiator. The oil cooler is under the intake manifold which has to be removed to replace the oil cooler.

Nov 06, 2010 | 1998 Cadillac Catera

1 Answer

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.

May 13, 2010 | 2000 Cadillac Catera

4 Answers

There is oil in the radiator

could becoming from ur oil cooler lines that go into rad,,,could have internal crack in rad,,,pull dip stick out & ck to see if motor oil is low or a grayish color,,if ok ck trans fluid to see if is low,,have to find out what kind of oil residua is in the over flow jug

May 08, 2010 | 1998 Chevrolet Astro

3 Answers

My 2000 Cadillac Catera is has water mixed with

it is normal to have that paste stuff on the underside of your oil cap and some on the tube the cap goes on. this is condensation it goes to the highest points in the engine alot of short trips makes this worse
if the oil thats drained out looks like regular dirty old oil then dont worry about it
if it looks pastie white then you got trouble

Mar 23, 2010 | 2000 Cadillac Catera

1 Answer

We have a 2000 Cadillac Catera the Radiator has

Is it Oil,or Automatic transmission fluid?
I've changed several Catera Radiator's because the transmission cooler cracked inside of them!!
Better check the transmission fluid for engine coolant too,Coolant in the Automatic Transmission will kill it purdy Quick!

Mar 10, 2010 | 2000 Cadillac Catera

1 Answer

Oil in water

if it is oil .you should notice the oil level drop ,even a small amount ,this would indicate a blown head gasket. but if it is transmission fluid it will be the oil cooler in the bottom of the radiator that cools the transmission fluid .has sprung a leak which is easily fixed at a radiator service centre,the headgasket is a bit bigger job but no real drama .radiator people will be able to tell you if it is oil or tranny fluid

Jan 20, 2010 | 1998 Cadillac Catera

1 Answer

2000 catera oil is geting in the cooling

If a mechanic putting the coolant back in after arepair didn't do it then the oil cooler connection in the raditor can fail but the head gasket can be leaking too. Check for coolant in the motor oil tooas his will tell about the head gasket. The oil isundermorepresure than the coolant except then the car is shut off after fully warmed. No coolant in the engine oil. Flush the cooling system real good and install just water run the car and look for oil again if it's clean then put new coolant in it and don't ley the last person to work on it since this happened to work on it any more as someone could have added oil to the coolant not knowing about cars well enough or trying to cause problems on purpose.

Dec 05, 2009 | 2000 Cadillac Catera

1 Answer

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.

Aug 03, 2009 | 1998 Cadillac Catera

1 Answer

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.

Dec 20, 2008 | 2001 Cadillac Catera

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