Oil cooler

BOGDAN MARIAN

MEMBER
2003 MERCEDES BENZ C180
1.8L
4 CYL
TURBO
2WD
AUTOMATIC
120,000 MILES

Hello.

At the car in the description I changed the plastic pipe that comes out of the engine and goes down to the oil cooler. Now I think I have problems with the oil cooler and the water doesn't go up more than 85 degrees and it's 15 degrees outside.

Is it the cooler that gives me oil in the expansion vessel or cylinder head gasket?

Thanks

3 Replies

KASEKENNY

MECHANIC
18,907 POSTS

In short yes to both. It could be either one. Here is a guide that helps with this:

https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil

The best and easiest way to test this is to test the head gasket and then replace the cooler if that passes.

https://www.2carpros.com/articles/head-gasket-blown-test

Let's start with this and go from there. Thanks

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Friday, October 30th, 2020 AT 10:57 AM

BOGDAN MARIAN

MEMBER
2 POSTS

Before I had this oil leak in the expansion vessel, I changed the water pipe from the cylinder head to the cooler.

I suspect that when I changed the pipe from the oil cooler this cylinder head ran out of water. And when I turned on the engine it took a few minutes until the thermostat reopened for water to enter the cylinder head when the cylinder head gasket probably burned. Can it really burn so easily?

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Monday, November 2nd, 2020 AT 5:04 AM

KASEKENNY

MECHANIC
18,907 POSTS

It is unlikely. Even if there is coolant in the head it is still not moving until the thermostat opens so the coolant is going to heat up at the same rate. So if there is no coolant there, it won't get hotter faster. However, it is a simple test to follow the head gasket guide above. Let's just test it and go from there that way we know for sure. Thanks

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Monday, November 2nd, 2020 AT 6:31 PM