Oil Mixing in Radiator

Bad head or head gasket.

Broken block, maybe.

Get a mechanic who is competent to fix it.

thanks a lot

The way I see it you have 3 possibilities:

• Blown/Leaking head gasket
• Crack in the head
• Crack in the block

Thanks a lot

Ok, water in oil, diesel motor 101.

With the engine off (Here's your sign) remove the injectors from the head as per the Factory Service Manual (FSM). Inspect the tips for water/corrosion. If you have one(or two, usually adjacent cylinders) that the tips have little or no carbon on them compared to the other injectors then you have a head gasket problem, which wil require the removal of the head as per the FSM and replacing the gasket. Usually you will have performance issues, and pressurisation of the coolant system as well.

Thanks a lot

Your present knowledge implies an oil to water leak in a position where the oil is at a higher pressure than the water, which is why its one way only.

Also, oil can get through really tiny holes under pressure, water can often not, I forget the reasons why....Adding antifreeze to any engines cooling system will sometimes find lots of small holes that were not apparent before.....the water "flows" better when mixed with antifreeze....

As has been discussed, the leak is probably due to a bad head gasket.....or an "O ring" mounted in the head to block area.....

Thanks a lot

You are right and the reason is the same as why a spider in a glass of water will float until alcohol or soap is added, then he sinks.

It's the disruption of the binding forces in the water. Water is tightly bound to itself even though it is a liquid. So if the holes are in a non wetting material, then significant pressure is needed to force it through. But like you said, if you add antifreeze then the holes and the material they are in, will wet and the water will flow through them.

You've got a blown head gasket.

Bazzer

not enough info. your problem as you described it does'nt sense, but check the pre-heater inside the radiator. better yet, replace the radiator and cap. pressure test the old radiator so you can sleep at night.

#1 See Item #2.

THIS APPLIES TO YOU, TOO!

And not just as it relates to this thread.