I open the coolant cap and i see milky oil in it plus white smoke comes from the tailpipe.
Oil in expansion tank diesel.
When i changed the oil there weren t any traces of water in the oil.
The cubical coefficient of thermal expansion for gasoline is approximately 0 000950 degree celsius.
Car is vectra diesel year 2000 with 200 000 miles it turned out to be the heat exchanger 20 off ebay and my local man has replaced it.
Oil in expansion tank 87 300d so i took the cap off looked inside and it was up to the proper level but there were several drops of oil floating on top of the coolant this car does have the 14 head but when cold the upper hose does not have a bit of pressure.
It s common for them to read min when the engine is cold but it will reach closer to max once the engine is at operating temperature.
A friend of mine had this problem on his car before he changed the oil cooler and new expansion tank as it had mucky water stained on it and the car is still fine today but the water is a little murky but head deffo hasn t gone so maybe residue from somewhere 2009 sprint blue s3 8p3 bose rnse mkii bluetooth rear pdc cruise control.
It was more noticeable once the undertray had been removed to take a look.
That tank is there to hold excess coolant and give room for expansion hence the name.
Scammed oil in coolant expansion tank.
The expansion tank is located higher than the radiator and functionally becomes the top of the radiator adding fluid capacity with plenty of room for coolant expansion.
My engine has an oilcooler where coolant not air cools the oil so i suspect there must be a leak there and due to the higer pressure of the oil in relation to the.
Hi i have a vectra 2 0 dti 02 plate with a peculiar problem the expansion tank is full of thick black oil.
I initially thought i had an oil leak at the n s fas oil was pouring out from under the car.
Hi i have a 2009 bmw x6 35i 3 0l engine and my check engine light comes on but the car not overheating.
A lot of expansion tanks have hot cold markings instead of min max to lessen the confusion.
I also see oil on the oil filter and oil cooler system and it run down on the side of the engine block.
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Light brown oil scum soap on the side of the expansion tank slight oil sheen on coolant problem solved for 100 plus about 2 hours max including the coolant flush and change.