2001 Audi A4 1.8T- Oil in Coolant and overheating
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Joined: Jun 2007
Posts: 1,138
It is NOT a BLOWN HEAD GASKET. Your OIL COOLER IS BAD. Same thing happend to my Audi. I was driving home when it was overheating. Opened up a coolant tank and there was oil in it. Next day bought a brand new oil cooler which cost me $60 and its located under the oil filter, replaced it now runs like **** lol. Make sure to flush your system and get all of the air out and replace cooling temp sensor.
Much easier than a head gasket. Replace oil cooler , replace expansion tank & flush multiple times to get out as much crud as possible.
I will use oil absorbent towels in the expansion tank with the engine running to pick up as the oil floats to the top.
Also remember to get out as much oil as possible. Oil in the cooling system = shortened life of anything rubber in the cooling system.
I will use oil absorbent towels in the expansion tank with the engine running to pick up as the oil floats to the top.
Also remember to get out as much oil as possible. Oil in the cooling system = shortened life of anything rubber in the cooling system.
Last edited by M5S5; Feb 7, 2012 at 10:30 AM.
1st Gear
Joined: Dec 2013
Posts: 1
audi a4 tihick coolant issues
hi, hope you can help.
just got my audi A4 through its MOT and service no problems. however the coolant is a light brown colour and fairly thick. The engine is running fine and unlike other peiple who seem to have a similar problem my car is not over heating. Is there an easy answer to getting the coolant back to normal viscosity or do i have a head gaskey problem. cheers fletch
just got my audi A4 through its MOT and service no problems. however the coolant is a light brown colour and fairly thick. The engine is running fine and unlike other peiple who seem to have a similar problem my car is not over heating. Is there an easy answer to getting the coolant back to normal viscosity or do i have a head gaskey problem. cheers fletch
1st Gear
Joined: Nov 2010
Posts: 240
From: Milwaukee, WI
Was it that color when you bought it?
If it was or you don't know I would start with a good flush as previous post said and refill with proper G12 coolant for audi.
If it stays pink then you are good, it was just old and was probably mixed with incorrect coolant.
If it was pink to begin with or gets oiled again after the flush and refill then I would start with the oil cooler as explained in previous posts of this thread.
Good luck.
If it was or you don't know I would start with a good flush as previous post said and refill with proper G12 coolant for audi.
If it stays pink then you are good, it was just old and was probably mixed with incorrect coolant.
If it was pink to begin with or gets oiled again after the flush and refill then I would start with the oil cooler as explained in previous posts of this thread.
Good luck.
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