我的冷卻液中有油,但油中沒有冷卻液-雷諾Twingo RS


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我剛剛檢查了Twingo RS的流體,並發現冷卻液中有油。所以我自然而然地想到了墊片。但是機油中沒有冷卻劑,沒有煙冒出,沒有功率損失,沒有流體損失(至少我看不到,因為一段時間以來流體水平一直相同)。那麼,除了頂墊之外,還有其他可能嗎?我認為我沒有油冷卻器,但有時油從恆溫器外殼中流過?

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The most common cause of oil in the coolant is a problem with the head gasket which allows higher-pressure oil to flow from an oil passage into the coolant. This may be due to the gasket itself or a warped cylinder head.

Less common, but also possible, are a cracked cylinder head or a cracked engine block.

Another possible cause, which you have ruled out with your manual transmission, is a leak in the transmission oil cooler which is usually inside the radiator. Of course this is not engine oil but transmission fluid but it can be difficult to tell the difference when mixed into the coolant.

I'd say your next step is to remove the cylinder head and inspect the head gasket for cracks or splits in the areas between oil and coolant passages.

Some vehicles also have an oil-to-water heat exchanger, often near the oil filter, and this may also be the cause if your vehicle has one.