Question about Saturn SL2

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97'Saturn sl2...black substance that looks like oil has filled up the tank where I put antifreeze.Started off like a moca,milky substance leaking on the ground pretty bad,so I had radiator replaced & now this oil problem but NO LEAKS.If my car sits running for 3-5min (like in a drive thru) the temp goes up to half(if not a tad ova,I wouldn't let it over heat to the red area)til I drive then it goes down,someone please help me!!!!

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Blown head gasket , sorry. Classic symptoms.

Posted on Mar 28, 2015

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So sorry to hear of this Problem, But You have either A head Gasket that has Acquired a Crack or A crack in the Engine Block somewhere between the Cylinders and an Oil port. this is what will cause Milky Oil in the Coolant reservoir/overflow tank, if the color is More Brown then it is Definitely engine Oil if it is Reddish then it is a trans coolant leak But since You say you replaced the Radiator then My money goes to and Engine Problem, You nee to See a Professional Mechanic shop to have the System Pressure Checked, And The Oil Dipstick checked, if You have Milky foam on that stick then You will have narrowed down the Problem

Posted on Mar 28, 2015

  • Alicia Mar 28, 2015

    Thanks alot for the info. My oil dip stick isnt foamy it looks normal and im not having to constantly put oil in it either..imma do like you said and get it looked at before i go completely with trying to get a head gasket done bc the engine might jus be the problem.Thanks again,ill let u the outcome.

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Posted on Jan 02, 2017

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SOURCE: How to replace coolant tank on Saturn SL2

The antifreeze tank is held on by I believe two bolts on the side. It's pretty easy to remove,

Just unbolt, remove hose and do the reverse with your new one.

As far as a replacement, I'd junkyard or ebay one. Lot cheaper, quicker, and easier than trying to get an aftermarket one and modifying to fit.

Posted on Mar 04, 2009

  • 396 Answers

SOURCE: Coolant leaks, oil pan gaskets leak started

Check temp control sending unit and thermostat.

Posted on Jul 17, 2009

Mechanic65
  • 142 Answers

SOURCE: 97 transport 3.4 engine- New radiator,

Are your cooling fans working? that will definately be a problem if not working. if they are working shut car off and feel the radiator is it the same temp all over or is it hot in only top or one smaller area. if you do not have same temp feeling on all of radiator your radiator may be plugged.

Posted on Oct 09, 2009

Mustgo
  • 2359 Answers

SOURCE: Replaced water pump, alternator, radiator, crank

Inside the coolant reserve tank there is a sensor for coolant level.


Over time,this sensor can get stick.


Inspect the coolant reserve tank for crack or leak.

Locate the coolant level switch/sensor and soak it in clean warm water.

Make sure it's free to move up and down the float path.

Top off the coolant tank with coolant only.



Posted on Dec 02, 2009

  • 50 Answers

SOURCE: 2004 cheverolet impala 3.4L engine

Sounds like you have an air;lock in your cooling system.Try placing a bleeder on the return hose to the heater core ........looks like a small tap

Posted on Aug 18, 2010

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Inside the coolant reserve tank there is a sensor for coolant level.


Over time,this sensor can get stick.


Inspect the coolant reserve tank for crack or leak.

Locate the coolant level switch/sensor and soak it in clean warm water.

Make sure it's free to move up and down the float path.

Top off the coolant tank with coolant only.



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