Oil in water bottle no emulsion no coolant loss could it be oil cooler

This article says it is from the oil cooler heat exchanger.

http://www.teamfiat.com/threads/engine-oil-mixed-with-coolant.15125/

https://www.google.com/search?q=Tata+indica+vista+oil+mixing+with+coolant

Cylinder Head Gaskets
A few explanatory notes...

The cylinder head gasket is a complex seal within the engine intended to keep cooling water, engine oil and the combustion process separate.

The life of a cylinder head gasket is very stressful and deterioration begins the moment a new engine is started for the first time and continues at a rate depending on the usage and the design of the engine.

It is almost inevitable that the cylinder head gasket will fail at sometime in the life of the engine and replacement will be needed.
Occasionally a complete head gasket failure is sudden (and disastrous for the engine as serious overheating can take place) but mostly symptoms or clues indicating the continuing deterioration of the gasket is resulting in it failing to do its job properly are present for a long time before complete failure occurs...

When two, or more, of the following symptoms are present most or all of the time it is time to seek help and advice: -

1. Residual pressure in a cold cooling system.
2. Pressure in cooling system immediately or very soon after start-up (while still cold).
3. Abnormal amount of bubbles seen rising through coolant expansion bottle (if it is clear plastic) while the engine is running.
4. Misfire occurring regularly on start-up that clears rapidly (cold or just-warm engine).
5. Steady coolant loss but no external leaks.
6. Abnormally large amounts of vapour from the tailpipe continuing longer than normal and might be accompanied by a spray of water. Some vapour and some droplets of water are normal, especially in cooler weather.
7. Unusual or erratic heater operation (warm/cold not electric fan) often accompanied by unusual temperature gauge indications.
8. Engine oil level does not fall in spite of usage or even seems to be getting higher: oil might also have a lighter coloured or creamy appearance than is usual.
9. Oily deposits floating on top of coolant.
10. Emulsion present under oil filler cap and/or dipstick. Some emulsion (or mayonnaise) is usual for many engines under some circumstances.

Head gasket replacement is not a routine operation and it usually is not possible to predict the amount of work required before dismantling has taken place. For reasons of long term economy and reliability it might also be advisable to have other work carried out at the same time, such as timing belt replacement, valve stem oil seal replacement, etc.

II got a dodge 1500 4.7. The problem is, the oil cab is all green and im losing coolant all the time, there's smoke coming out smells bad, but no check engine at all. So I took it to a shop to check it they said, it's a water pump ,I changed the water pump but still losing coolant ............ so is it head gasket, manifold gasket, valve stem seal, piston rings, or something I don't know of??

It has to be a gasket related problem or radiator. Check your oil cooler lines, they maybe allowing oil to get into radiator, therefore prob bad radiator but sounds like intake or worse yet Head gasket problem.

Replacing the heater core isn't likely related to the water in your oil. Check the coolant overflow bottle for traces of oil too; if you see any signs there you probably have a blown headgasket. Also sniff the open bottle to see if there are any exhaust fumes noticeable. If your oil is already looking milky, the engine is in danger of failure since that emulsion does not lubricate as oil alone.
If a tech finds the headgasket has indeed failed, make sure that the cylinder head(s) are resurfaced to remove any warp that has developed. That isn't costly to have done and will insure that the new gasket doesn't fail too soon either.

does it have an oil cooler under the oil filter? (a lump perhaps half as high as the filter but a bit fatter with 2 rubber water pipes going to it) citroens are well known for these oil/water coolers leaking into the water.

this sounds like head gasket failure to me the seal on the head gasket tends tp break between the oil and water jackets

Two classic examples of a blown head gasket.
Check the coolant expansion bottle for exhaust-like fumes or any sign of oil contamination and the oil dip stick for any milky appearance characterizing an oil-water emulsion.

If there is engine oil in your coolant bottle then your oil cooler is probably bad. If you need more info let me know.

This is probably a head gasket problem and not an oil cooler problem.

The oil cooler is fairly easy to test.

Remove the cooler from the engine but do not disconnect cooling lines and then pressurize the cooling system. You can use a radiator test tool to put pressure on the cooling system and look for leaks. If it leaks, replace it.

You may also be able to bypass the oil cooler altogether if it leaks.

The head gasket is another story.

Get a 1/4" pipe to spark plug fitting and put a male air coupling fitting in it.

Then you can charge the cylinders with air from your compressor.

Make sure each cylinder that you test is at top dead center so that the valves are closed.

If air bubbles into your coolant, you found your problem.

If air leaks out your intake you have a bad intake valve

If air leaks out your exhaust you have a bad exhaust valve etc.


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Tim