Antifreeze, can leak into Engine Oil and other Lubricating Oils, in a variety of ways: Other problem applications include, the Intake Manifold gaskets on, Buick 3800 V6 and Ford 4.0L V6 engines. The Intake Manifold gaskets, on these engines are plastic and often fail at 50,000 to 80,000 miles. And, is a common cause of, Antifreeze In Oil. And, also, 4.3L, 5.0L and 5.7L V8s, are famous for leaky Intake Manifold gaskets. Some engines, such as General Motors 3.1L and 3.4L V6 engines. Furthermore, this could allow coolant to enter the intake port, or the crankcase. In addition, the gasket that seals, the Intake Manifold to the cylinder heads may leak. Intake Manifold Gasket Leak Intake Manifold Gasket Leak This damaged area, may then start to leak combustion pressure and coolant. When the engine overheats, thermal expansion can crush and damage, portions of the head gasket. Because, of a coolant leak, a bad Thermostat, or an Electric Cooling Fan not working. Head gasket failures are often the result of, engine overheating. And, create a lot of white smoke out the exhaust. A head gasket leaking coolant into a cylinder, can foul the spark plug. And, can damage the Engine Bearings in your engine. Consequently, coolant leaking into the crankcase, dilutes the Engine Oil. So, a bad head gasket, may leak coolant into a cylinder or into the crankcase. Internal coolant leaks are most often, due to a bad head gasket. Internal Coolant Leaks ( hidden inside the engine) Head Gasket Leak Head Gasket Leak So, even a small coolant leak over time, is enough to severely corrode engine steel and copper surfaces. The corrosive conditions, can pit the clad surfaces of the lead/tin overlay of the Engine Bearings. Organic acids will form and can jeopardize, Engine Bearings and other frictional surfaces. Another reason why, Antifreeze In Oil damages the engine, is that it creates an acidic environment, within the Oil. Antifreeze In Oil, causes a thickening of the lubricant, thereby increasing the oil viscosity and reducing the flow. Antifreeze In OilĪlso, Antifreeze has almost no lubricating properties, when mixed with Engine Oil. As a result, making it harder to flow through the oil galleries and lubricate the engine. And, then it is referred to as, Engine Coolant.Ĭonsequently, when Antifreeze mixes with Engine Oil, it make the oil thicker. Antifreeze is a concentrated, glycol based liquid, that must be, diluted with water before use. see if it's low or milky.So, Antifreeze and Engine Coolant are similar, but not the same. I give this a almost completely unlikely chance but stranger things have happened.Ī side note: you may also want to check your trans fluid if it's an automatic. If it is not your radiator the only other place that higher pressure oil and water could mix is by a very strange crack in the block that only goes between a high pressure oil spot and somewhere that there is coolant. I am pretty confident it is your radiator though. If you want to go crazy you can hook up some test line to the oil inlet, plug the outlet, hook up some compressed air, and see if you hear hissing inside the radiator. Thoroughly check for any cracks or damage around the fittings on the radiator. This is also the only point where they are close to mix if there was a break and has potentially higher oil pressures than the coolant pressure. Both the engine oil and trans oil passing through the radiator should be higher pressure than the water which is good news for you, there shouldn't be water in places it can damage, oil in water doesn't do much. The radiator on these are a single unit containing the engine cooler and a transmission cooler, if you have an automatic transmission. If the head gasket was blown you would get the classic water in oil and not oil in water. This engine is a single in block cam engine so there should be no high pressure oil going to the heads across the head gasket.
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