Question about 1998 Mercedes-Benz S-Class

3 Answers

I have oil in my coolant overflow tank. Is this a head gasket problem. No water in the engine oil...

Posted by on

  • jweismanfpcs Sep 30, 2009

    gas

  • Donnie Wilson
    Donnie Wilson May 11, 2010

    It can be here is your diesel or gas?

×

Ad

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 986 Answers

Here is the way to find out pull your spark plug put out and bring each cylinder tdc and put 50 psi air in that cylinder remove radiator cap and check for bubbles do this to all cylinders,if no bubbles I would be checking to see if that engine has a oil cooler that could leak oil into your coolant,some mercededs had oil cooler,

Posted on Sep 30, 2009

Testimonial: "Thank you, will try. I was going to flush out the cooling system a couple time and see if I got oil again."

  • Donnie Wilson
    Donnie Wilson Sep 30, 2009

    I would be checking for the oil cooler because your not getting any coolant in your oil, I hope this helps you

  • Donnie Wilson
    Donnie Wilson Sep 30, 2009

    Also one thing I might need to add,you tans cooler is built in the radiator

×

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 2 Answers

HI,
I have w210 e430 same problem oil in coolant reservoir, but no coolant in engine oil, now that i think about few weeks ago i tried to pulled the wracked car with this e430 and since the wracked car's tires were locked it put way to much load on my e430 that back tires spined on drie concreat, that created inormus transmission oil presure that might have burst oil cooler in radiator. you can do pressure air pressure test of the oil cooler radiator to see if it leaks.

Posted on Feb 23, 2010

Ad
  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 163 Answers

Could be a headgasket or even a cracked block...

Posted on Sep 30, 2009

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 182 Answers

SOURCE: 03 elantra 2.0l boil over...head gasket ?

thermostat

Posted on Sep 12, 2008

SOURCE: Oil in over coolant tank

since you are running green coolant in a car designed for dexcool that may have contributed to a leaky intake gasket and/or head gasket. dexcool was specially formulated to run in the GM vehicles because the gaskets and seals can be easily distorted when the wrong chemicals are soaking them. oil in the coolant is usually either a head gasket or the lower intake manifold leaking into the cooling system. also if the intake gaskets werent done properly that would cause oil in the coolant as well. i suggest you take your car to a reputable shop and have it tested for a headgasket leak and to have the lower intake inspected.

Posted on Feb 17, 2009

  • 316 Answers

SOURCE: Coolant overflowing out of expansion tank no boil no steam

As you've stated driving around town it's fine, and everything is working well. For the symptoms, there are 2 possible causes:
1. Your cooling fans are not working.
2. Your radiator needs to be replaced.
I'm sure you can determine which it is, and I wish you luck on your repair.

Posted on Jun 02, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Rocam1.6 engine overheats push water out of waterbottle. ford fiesta2000 sport


Check the head gasket by pressure checking the system and looking for oil in water, water in oil etc.

Oct 05, 2017 | Cars & Trucks

1 Answer

Ifull the tank in the radiator but it will disaper but no leaking in the hose what would i do


If you are losing coolant then you have either an external or internal leak.
If you can find no indication of an external leak from the radiator, the radiator overflow tank, any of the hoses on the system or around the water pump fitting then you may well have an internal leak. Check the radiator overflow tank carefully and the hoses to it for any signs of external leakage.

An internal leak of coolant can be via a failed cylinder head gasket or a crack in the cylinder head or both. Coolant can then leak under pressure into the cylinders or into the engine's lubrication system and will then mix with the oil. Check the condition and colour of your oil for evidence of coolant contamination. Check your exhaust for a constant flow of white exhaust emissions which is evidence of coolant entering the combustion chamber.

If you have run the vehicle with the engine overheating this will generally cause failure of the cylinder head gasket and possibly a crack in the cylinder head.

Feb 18, 2016 | 2001 Ford Escape

1 Answer

92 chevy lumina,car starts but wont idle.overFlow


If you see bubbles in your overflow tank, it is either overheating or (more probably) it has a blown head gasket. How long after engine cold start do the bubbles show?
A compression test could tell you more about the head gasket condition. You can also have the coolant tested against CO2 contamination.
Sometimes you can see oil on the surface of the coolant in the overflow tank when the head gasket is blown (check this with cold engine).

Oct 17, 2014 | 1992 Chevrolet Lumina

2 Answers

Can a water pump make water to return to the water bottle


If the engine overheats from a thermostat
stuck closed or bad head gasket

Aug 10, 2013 | Cars & Trucks

2 Answers

My boyfriend has a 91 Toyota 4runner v6 SR5. He has replaced the radiator and thermostat. Also he has bled the coolant system several times. The truck is still losing coolant. If he drives the truck...


When engine completely cools remove coolant from overflow reservoir to the cold mark on the reservoir which is the lowest mark on reservoir. If you continue to loose coolant you may have busted block.

Aug 04, 2017 | Cars & Trucks

2 Answers

Overheating coolant boiling out into reserve tank


you have a blown head gasket.. doesn't have to have coolant in the oil for a blown head gasket... if hoses are rock hard when running then you have exhaust leaking into the coolant via a blown head gasket...

Jul 14, 2012 | 1998 Plymouth Breeze

1 Answer

Blowing white smoke


white smoke is caused by-- water or anti-freeze entering cylinder . if in radiator or the overflow tank. it will look like a chocolate milk shake. check on oil dipstick for traces of water or anti-freeze. also, a bad head gasket will let water or anti-freeze in combustion area. head gasket symtoms if bad. Symptom #1: Chronic Engine Overheating
Symptom #2: Significant Drop in Coolant Level Symptom #3: Mixing of Coolant and Engine Oil
Symptom #4: White Smoke from Exhaust Pipe

popping of overflow cap Symptom #6: Air Bubbles in Radiator
Symptom #7: Engine Lacks Power GOOD-DAY!

Apr 17, 2012 | Cars & Trucks

3 Answers

Coolant coming out of the overflow spout after shutting down.


about 100K miles? sounds like a blown head gasket is allowing coolant to be pushed out the exaust,and combustion pressure is pushing fluid out the overflow.have your compression tested.

Sep 21, 2009 | 2000 Chrysler Town & Country

3 Answers

Coolant overflowing out of expansion tank no boil no steam


As you've stated driving around town it's fine, and everything is working well. For the symptoms, there are 2 possible causes:
1. Your cooling fans are not working.
2. Your radiator needs to be replaced.
I'm sure you can determine which it is, and I wish you luck on your repair.

Jun 02, 2009 | 1999 Ford Taurus

2 Answers

Oil in over coolant tank


If there is oil inside the coolant liquid that is the head gasket.

Check first if oil can leak into the coolant tank from the cap.

Usually when you get oil into the coolant liquid you have an head gasket problem, do a compression test, or buy the home tester below.

eBay.co.uk Guides - HOW TO TEST FOR A FAILED HEAD GASKET
Head Gasket or Combustion Leak Test Procedure (Gasoline Engines Only)
Blown Head Gasket? how to check

Feb 17, 2009 | 1996 Chevrolet Monte Carlo

Not finding what you are looking for?
1998 Mercedes-Benz S-Class Logo

3,051 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

yadayada
yadayada

Level 3 Expert

76109 Answers

Michael Contreras
Michael Contreras

Level 2 Expert

166 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...