Question about 1997 Buick LeSabre

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What would cause coolant to get in your oil? - 1997 Buick LeSabre

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This is not a good thing. You have a gasket leaking somewhere (head gasket, intake gasket) or a cracked head or block possibly. Don't run it like this you will wreck the whole engine instead of just a gasket replacement. Still not easy or cheap but better than a new engine.

Posted on Jun 26, 2009

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Coolant gets into your oil from a bad head gasket or bad gasket it,s self...the 2 fluids are seperated with a gasket...when that wears they unite...also a bad warped head will cause seepage too

Posted on Jun 26, 2009

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Blown head gasket

Posted on Jun 26, 2009

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1 Answer

What is the cause of ford bantam rocam to mix oil and water


More details would have been helpful but I assume you mean you are either finding oil floating on the coolant or the engine oil level is rising due to coolant finding a way into the oil pan?

A failing cylinder head gasket is the most common cause but a cracked cylinder head or block is a possibility and in some cases a cracked intake manifold or failing gasket can be responsible.

Engines of the wet-liner design a failed liner seal can fill the oil pan with coolant without causing oil in the cooling system.

It isn't unknown for the inexperienced to actually top up a coolant level with engine oil.

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Oil in the coolant is blown head gasket usually caused by over stressing or over heating the engine.

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Addeed coolant yesterday today coolant is gone but oil is showing passed full whats going on ?


Your description sounds very much like a blown head gasket or a cracked head/block. This allows coolant to leaking into the oil sump, causing the overfull indication. Check the oil fill cap. If the underside of it has a "chocolate milk" like residue on it, this is the result of oil and water mixing. If this is the case, STOP USING THE CAR IMMEDIATELY. The water in the oil will cause excessive wear on the engine and destroy it in short order. The engine will need to be torn down, flushed, and the cause of the leak found. Only then can it be reassembled and put back into use.

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What can cause oil in coolant and not coolant in oil


blown head gasket cause coolant to get inside the engine, the oil wont go into the radiator though, its like a broken dam it will only flow out not in. Its not a good sign for the engine

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99 MALIBU HAS OIL IN THE COOLANT RESEVOUR


this oil is usually from the trans cooler in the rad that helps keep the trans fluid at operating temperature by the engine coolant absorbing the heat from the trans fluid .the cooler is a steel tubing in the rad tanks that the engine coolant runs around and absorbs the heat.when the cooler rusts through the trans oil seeps into the coolant.if it was motor oil it could be caused by a head gasket were the oil passage is next to the coolant passage in the gasket and it seeps into the coolant passage.however the coolant pressure is alot higher than the oil pressure and the coolant usually enters the crankcase.

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I have oil leaking into cooling system, but no water in the engine. My oil level is dropping. What can cause this and what is the fix?


This is caused by a leaking head gasket. When a head gasket leaks you can get oil in the coolant or coolant in the oil of the engine or both. You will need to pull the cylinder head off, have it checked for cracks and if none are found have it machined flat again and replace the head gasket. Use only a quality head gasket set either from the Toyota dealer or a well known quality brand like Fel-Pro (available from NAPA and others). This is a job that requires some special tools and a great deal of car repair knowledge, time to do the job is about 6 hours.

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What does a problem in the head gasket sound like? And how can you check.if theres a problem?


A couple of things will generally happen if you have a bad head gasket. Usually you will notice alot of steam and white smoke coming from your exhaust cause from coolant getting into the cylinders. Another to check for is coolant in your oil. Check your engine oil and if it has a milky look to it that meant that coolant is getting into the crankcase. Also check your coolant to ensure proper level and make sure that there is no oil in the coolant. Also if your head gasket is leaking exhaust into the cooling system it can cause your car to overheat. I'm not aware of any real sound that a bad head gasket will cause. It will probably cause the car to run rough and will eventually cause major engine damage if not repaired.

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There has been a problem with the Dex cool orange antifreeze deteriorating the upper and lower intake manifold gaskets, causing coolant to leak in to engine.If there is antifreeze in your oil, it will ruin your engine. If you find antifreeze in the oil it will cause the oil to become thick and frothy and will not lubricate the bearings and other moving parts, causing an engine failure. If there is evidence of coolant in the oil, do not drive the vehicle. Have it towed to a repair shop and have the gaskets replaced, oil and filter changed, cooling system flushed and refilled with GREEN antifreeze that is compatible with aluminum radiators and engine parts.

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Have oil in my radiator fluid reservoir tank (1996 v6 3.8)


Twice in two years now my Saab 9-5 has had a pin-hole in the oil cooler, which has caused oil to flow into the reservoir. A way to tell is if coolant/oil is coming out of the reservoir cap. The reservoir cap is rated for the pressure of the coolant system, which is significantly lower than the oil pressure. When there is a hole in the oil cooler, oil will be forced out at relatively high pressures, causing the reservoir to fill and then over pressurize and spill out of the cap.

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The blowing of air into the coolant resevour is caused by a leaking head gasket. What's happening is the cylinder is blowing air into the cooling system causing this to happen.

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