Hello my name is Mark.
If you are getting antifreeze in the engine oil it is either going to be a water pump issue as this is mounted inside the timing cover or a head gasket issue. I would tend to believe it is more likely a water pump issue. Can you get access to a pressure tester to pressurize the cooling system? Are you seeing any coolant leaking on the ground?
There are also products available at most parts stores that can be added to the cooling system to test for combustion gases........which would indicate a head gasket issue. These are inexpensive and are generally referred to as a "block tester".
With engine not running, wipe the coolant bottle neck sealing seat clean.
Attach a radiator pressure tester to the coolant bottle, as shown in (PRESSURE TESTING COOLING SYSTEM) and apply 104 kPa (15 psi) pressure. If the pressure drops more than 2 psi in 2 minutes inspect all points for external leaks.
All hoses, radiator and heater, should be moved while at 15 psi since some leaks occur while driving due to engine rock, etc.
If there are no external leaks after the gauge dial shows a drop in pressure, detach the tester. Start engine and run the engine to normal operating temperature in order to open the thermostat and allow the coolant to expand. Reattach the tester. If the needle on the dial fluctuates it indicates a combustion leak, usually a head gasket leak.
WARNING: WITH TOOL IN PLACE PRESSURE BUILDS UP FAST. ANY EXCESSIVE AMOUNT OF PRESSURE BUILT UP BY CONTINUOUS ENGINE OPERATION MUST BE RELEASED TO A SAFE PRESSURE POINT. NEVER PERMIT PRESSURE TO EXCEED 138 kPa (20 psi).
If the needle on the dial does not fluctuate, race the engine a few times. If an abnormal amount of coolant or steam is emitted from the tail pipe, it may indicate a faulty head gasket, cracked engine block or cylinder head.
Ok, if the system is not holding pressure then it is leaking. If you do not see any leakage on the ground then the leakage will be internal. In other words the water pump or the head gaskets.
Either way it will need to be disassembled. Seeing as the timing chain has to come off to pull the heads I would remove the timing chain cover first and this will give you the opprtunity to view the pump for leaks. If you can see it leaking you've found your answer. If there is no leak then you will be pulling the heads.
When the water pump leaks it will run out a hole in the side of the timing cover............this hole is pretty hard to see, but this would make the leak appear to be from the front of the engine on the passenger side.
It will also leak into the oil and that is why you are seeing the white foamy stuff.
By all means add some more water to the system and see if it comes out from where I am suggesting to you.
It goes without saying that the oil and filter will need to be changed once the repiars have been done.
The water pump is far more likely to leak than the head gaskets.
If you would prefer a professional opinion of someone who actually gets to test your vehicle in front of them......feel free. You have been quoted the prices for that.
I am simply trying to answer your questions based on what you tell me and my experiences.
I will gladly send you some instructions but this is a pay site.
So far you haven't found the need to ACCEPT my responses. If you can do so i will send you some info.
The water pump on all models can be replaced without discharging the air conditioning system.
Drain cooling system. (Refer to 7 - COOLING - STANDARD PROCEDURE)
NOTE: The water pump is driven by the primary timing chain.
For Step 2
For step 3
NOTE: The A/C drive belt self tensioner is NOT a dynamic tensioner. After adjustment the tensioner bracket bolts are tightened. The torsion spring is no longer responsible for tensioning the A/C belt. The torsion spring is only used for initial belt tensioning.
CAUTION: When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage.
CAUTION: When the timing chain is removed and the cylinder heads are still installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve and/or piston damage.
NOTE: When camshaft sprocket bolts are removed, the camshafts will rotate in a clockwise direction.