My volvo s60 t 5 from 2001, suddenly had the coolant full with oil.the garage change the cooler,the radiator, waterpump, and fixed the casket. the oil came back after one months and volvo checked the cooler and said i was okay, but couldnt tell me why it happend. after driving one week the coolant level low lamp appear again and the water run out. there have since the repair been the lamp emision system requied sevice on, but not the warning lamp. they tell me in volvo that they has to put the computer on 0, but it is still comming back.Im so tired of going to the garage every week and want to sell it. what can be the problem ?
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Probably engine oil, unless you have been adding water pump lube. The oil can come from a blown head gasket, or if you are lucky it can be the transmission oil cooler inside the radiator has failed and is leaking. Either way, DO NOT RUN vehicle until you fix the issue and change all fluids. There is a tester that is used to pressurize the radiator which may help determine what has failed. Many parts stores have a loan-a-tool program that may have this tester.
If you have a engine oil cooler then yes thats the problem,the only oil cooler you have is the transmission cooler which goes into the radiator.and the transmission fluid would be full of water,you will need a headgasket
take a look at the waterpump, these cars have problems with waterpump leaking, take caution, the waterpump is driven by the timing belt,if that belt pops or jumps due to coolant leaking on it and causing it to fail,then you will have a costly repair,i belive its about $4,000 to fix, it will cause cylinder head valves to bent, have this coolant leak check asap.
the oil that you are seeing may be transmission fluid if its an automatic,the transmission lines go through the radiator for cooling.if the radiator fails in that section ,it could be leaking into the antifreze,or you have a blown head gasket
the coolant lines for the transmission cooler are on the radiator and is is separated internally from the engine cooling.radiator.
there may be a rupture internally in the radiator and you are getting coolant into the transmission.
hope this helped
The Transmission oil passes through the radiator to keep it cool , If the pipes inside the radiator are damaged then water can enter into the trans lines causing the problem you are having. Get the radiator checked and repaired/replaced... Also get the Trans fluid changed as water can damage the trans internals. Hope this helps.
Everyone always jumps to head gaskets. There are plenty of MINOR things that can be looked at first.
The Volvo 2.3, 2.4, 2.5 Inline 5 Cylinder dipstick tube is known to develop a large amount of condensationin winter months and stop and go driving. What you see on your dip stick is possibly just condensation. Take off your oil cap and look under the cap and inside the valve cover. Is there any thick foamy oatmeal like substance or noticeable amounts of water? If your oil was saturated with coolant, you would be able to see it up there too. Check your coolant for oil. Volvo coolant is typically brown to orange, however make sure there is no sludge. Start the car with the cap off and keep an eye out for alot of bubbles. A large amount of bubbles is a sign of a bad head gasket. A couple here and there is just air in your cooling system.
Coolant, Transmission fluid, and Oil have several places they can mix. If you have a turbocharged Volvo, the seals in the turbo can go bad and cause a mix of oil and coolant. Your transmission cooler is also in your radiator, and if it cracks your transmission fluid and coolant can mix. I believe turbo models have an oil cooler built into the radiator as well.
Overall if your car sounds fine, you dont see oatmeal, your not using coolant and oil in excessive amounts, dont have white smoke, and your turbo isnt whining you probably just have condensation in your dip stick. If you are overly concerned you can send a sample of your oil to a lab and have it tested for traces of coolant. Headgaskets rarely fail on Volvo's, even the old ones....I have seen many that have gone to replace them have not found a failed gasket and end up finding a bad transmission cooler or a bad turbo.