coolant contamination

  • Thread starter Thread starter ed
  • Start date Start date
E

ed

I have 850T5 auto 1997

The coolant expansion tank has some oil contamination, the mechanic is
not sure of the cause, he topped up all the fluids 400mile ago but
without any conclusions.

Anybody with any suggestions.

ED
 
I have 850T5 auto 1997

The coolant expansion tank has some oil contamination, the mechanic is
not sure of the cause, he topped up all the fluids 400mile ago but
without any conclusions.
Click to expand...

You've told us what the coolant looks like. What about the oil (when
the engine is hot)? Does it look like frothy like a frappe?
Anybody with any suggestions.
Click to expand...

The most common reason for this happening is unfortunately not
cheap - a blown head gasket.
 
Check the tranny fluid id it's an automatic and see if it is brown or RED.
If brown then collant water and tranny fluids are swapping with each other
in the radiator. This happened to my 89 240 Volvo. The internal cooler of
the tranny in the radiator gat a leak and swapped fluid for more that a
year. Had to replace tranny and radiator and all the hoses too.
 
Actually, the engine oil is surprising clear and without any frothe

ED
 
Actually, the engine oil is surprising clear and without any frothe
Click to expand...

Then perhaps it isn't motor oil in the coolant. What does the
transmission fluid look like?

Beverly
 
ed said:
I have 850T5 auto 1997

The coolant expansion tank has some oil contamination, the mechanic is
not sure of the cause, he topped up all the fluids 400mile ago but
without any conclusions.

Anybody with any suggestions.

ED
Click to expand...

ATF fluid cooler if it's in the radiator tank could be leaking
Engine oil could be leaking **somewhere**
Turbo?,head gasket
Some oil on the tech's top off fluids for whatever cause
 
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