Question about 1999 Volvo S70

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What will be the effect of engine oil mixing with water?

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The engine will loose its protective film or hydrodynamic wedge resulting in metal to metal contact (connecting rod bearing failure) the oil pressure in the motor provides a film of oil that comes between metal contact points and rides on the oil not the metal this film will be compromised if contaminated with water or antifreeze.

Posted on Jul 02, 2009

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Water mixing in the oil will cause bearings in the engine to seize up. It causes rust on parts like the crank shaft and camshaft.

Posted on Jul 02, 2009

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It will turn into a chocolate milk kinda pasty color, it will be light brown. it will be runnier. and eventually if u keep driving it... motor will probally lock up cause its not getting the proper lubrication it needs.

Posted on Jul 02, 2009

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Engine mixing water and oil in the sump. took the cylinder head and engine block for pressure test. but still mixing what could be wrong. The above was returned as not cracked.


hi there.
Water in the engine - Water can get into your oil sump in two ways: ... Water in the oil- Coolant leak due to non-watertight seal (cylinder head gasket, etc.). If this happens, there is a leak and water is getting into the oil.
Water in engine oil
If you found water in oil car , this water engine car section is for you!
Water in car engine? Water should never be allowed to get into the oil in your engine or gearbox. Otherwise, it will result in significant foaming, dramatically reducing the product's lubrication properties.
Water in the engine - Water can get into your oil sump in two ways:
  • Water in car - Water condensation in cold air or combustion gases: this phenomenon is extremely rare and only occurs at specific temperatures.
  • Water in the oil - Coolant leak due to non-watertight seal (cylinder head gasket, etc.). If this happens, there is a leak and water is getting into the oil.
Water in motor oil can cause serious damage to your engine - the oil will be denatured and no longer effectively cooled.
Contact your repair centre as soon as possible.

Dec 01, 2017 | Cars & Trucks

2 Answers

Why engine oil and water mixed in mazda3


Um, most likely not good. Most likely means the block is cracked allowing the water and oil to mix. Major engine repair.

...

May 16, 2016 | Cars & Trucks

1 Answer

What make a 1999 dodge Durango leak water out of the over flow I took thermostat out


Water coming from the overflow bottle usually means excess pressure in the water system or a faulty pressure cap. The first can be a failing head gasket, the second is a cheap fix. Taking the thermostat out will have no effect on water loss but will have a big effect on cooling. If you remove the thermostat the water circulates too fast through the rad and overheating results. You need to find someone who can properly pressure test the cooling system to arrive at a suitable answer. Have you removed the dipstick? Has it a white sludge on it? Is the engine oil discoloured to brown with white traces? If so then a head gasket is likely. If you've run it for any time without the correct coolant mix then its likely internal corrosion has eaten the gasket. When all is fixed run the correct mix.

Jul 05, 2015 | Dodge Cars & Trucks

1 Answer

Engine oil mixing into coolant


The only place, oil and water share a gasket is the cylinder head gasket, oil and water galleries run through the engine block and head via the head gasket. The cylinder pressure will be OK, it's the oil pressure that's putting the oil in the coolant, the gasket has gone between the water and oil galleries or there is an internal crack (unlikely). A coolant pressure test should show it up.

Jan 23, 2014 | 2012 Kia Sorento Base 4dr SUV 2.4L 4-cyl....

1 Answer

Cadillac CTS 3.6L V6 - The water in the water reservoir is mixed with what appears to be either engine or transmission oil.


If it is transmission fluid it is likely the heat exchanger (or cooler) has sprung a leak. The cooler is often integrated into the main radiator bottom tank. If fluid is entering the cooling system it is possible coolant could be entering the transmission.

Tranny fluid will appear clean and floating on the surface of the coolant and is likely to be pink or red while if it is engine oil it will be an altogether dirtier colour and more viscous. Try capturing a sample with some clean white tissue when the engine is cold.

Engine oil in the coolant could be a sign of a failing cylinder head gasket.
A failing head gasket is likely to produce unusual cooling system symptoms including ejecting coolant from the reservoir while a leaky tranny oil cooler is unlikely to have much effect on cooling system behaviour except for the obvious...

Aug 13, 2017 | Cadillac Cars & Trucks

2 Answers

Hi, i have automatic passat 1999 model and recently water happens to get into the gear box and it control board, i experiences a boom sound anytime the gear is changed, the oil has been changed by the...


If no external leak and the transmission fluid colour looks white, the problem belongs to the automatic gearbox oil cooler. The oil cooler has broke mixing the gearbox oil and coolant causing this milkshake. It's a small radiator core type oil / water heat exchanger. It is cracked inside and transmission oil is mixed with engine coolant. Because the transmission oil pressure is greater than engine coolant pressure, the transmission fluid level drops. See also the coolant colour inside recovery coolant reservoir inder bonnet! It could be like this:

tdisline_495.jpg
The automatic gearbox oil cooler type oil / water heat exchanger (oil cooler):

tdisline_496.jpg
In the picture above the transmission oil pan was removed for oil filter replacement.

May 05, 2011 | 1999 Volkswagen Passat

1 Answer

I have a 1998 Saturn. The reservoir often leaks water/antifreeze and light comes on to indicate. I have had water pump as well as reservoir replaced. Doesn't leak everday but still leaks. WHat is this?...


you need to find that leak, is the leak visible? if its not from radiator or the reservoir, the only other place I could think you can lose water is the head gasket. It happens to high miles and hard driver. 100k miles would likely be a head gasket. Leaking head gasket will also cause the engine temperature to rise and run super hot. antifreeze will leak through the head gasket down to your oil pan mixing oil and water. Check your oil by pulling the dip stick and see if you have oil mix with water; it will have a slimy looking colors, oil is light color and it should never be black. if it black than change your oil and inspect it afterward when the car has been running for while. when engine really hot cause the heat to effect the starter not to engage or start or engine is too hot to run. repairing head gasket could run anywere from 500-800 bucks.

Nov 24, 2010 | 1998 Saturn SL

1 Answer

1999 tahoe 5.7L has a problem. Water mixed with engine oil.


If it was not overheated real bad the intake gaskets are a big problem on those engines

Nov 04, 2009 | Chevrolet Tahoe Cars & Trucks

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