I took the car into the local Ford Dealer and said fix it around
Thanksgiving. They kept it for a week or so. The coolant overflow was
about half full with oil. I drove it for a 1000 miles and had a inch of oil
in the overflow. They flushed and I have driven another 1000 miles and I
have a inch of oil again. I think this may be too much oil to be left over
from my original problem.
Subject: Re: Motor oil in radiator.
Date: Friday, February 11, 2005 11:31 PM
Last one I did was subsatntially larger in cooling system capacity (not to
mention oil capacity).... 6.0 litre diesel. Coolant strength and temperature
ranges play into the equation. Bottom line was something over 6.5 hours of
flushing and coolant exchanges (no, I didn't use antifreeze until I was
happy with what was coming out). I have another with over 11 liters of oil
in the cooling system..... I expect to have a bit more trouble with this
After two different subsystems have "swapped spit", it can be hard to clean
up the remnants but it must be done to avoid any confusion in repeat
concerns. I understand that your repair was a retail job? This makes it even
more difficult as the financial burden of a lengthy clean up will fall
dorectly on the consumers shoulders.
One piece of advice I offer up regularly..... the cheapest thing that any of
us will ever do with a car is buy it.
Is your oil level going down?
As I had indicated... the weaker the antifreeze mixture, the more likely
that any oil in the coolant will take on the consistency of pudding. Add
temps that dip below freezing and it can turn into really gnarly pudding.
I would suggest that the dealer flush the system once again. At the same
time, they should add flourescent dye to the crankcase oil (I'd probably go
heavy on the dye... one vial treats about 5 liters of oil so I'd probably
use 3 or 4 since the coolant will cut the dye even more). Drive another
thousand miles and, if the oil slick returns, they can use a black light to
see if the oil constains any dye.
Thanks HTH,,,, Im having a similar problem....opened the cap and all I got
was chocolate coloured foam.
I added more coolant but it turned brown in a day....how does the oil get
into the coolant and where...
Different motors have different places where two different systems can "swap
spit". There are motors I am familiar with and motors I am not.... Cylinder
heads and oil coolers are the most likely places. In diagnosing these sorts
of problems, we need to remember that enigine oil pressure regularly exceeds
50 psi and cooling system pressure rarely exceeds 16 PSI. Even in a 50/50
mix, engine coolant exhibits a higher surface tension than motor oil.
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