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Check your head gasket. In addition, if your head gasket is bad or in need of replacing have your heads check for any cracks in them.

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Q: How do you fix coolant and oil mixture on a 1999 ford expedition?
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What kind of engine coolant does a 1999 Ford expedition take?

For the 1999 Ford expedition it is recommended that you use the Ford Premium engine coolant which is green in color. You should not use the Ford extended life engine coolant which is orange in color.


Where is the radiator cap on the Eddie Bauer Ford Expedition 1999?

On your 1999 Ford Expedition : The thread on cap on your engine coolant reservoir ( located at the front of the engine compartment , on the drivers side ) is the pressure cap / radiator cap


What type of coolant in use on 1999 Ford Expedition?

According to the 1999 Ford Expedition Owner Guide : It came from the factory with a 50 / 50 mix of distilled water and GREEN color antifreeze ( meeting Ford specification ESE-M97B44-A ) in the engine cooling system


Where is located Ford Expedition 1999 relays?

where is located ford expedition 1999 relays


What cause coolant and oil to mix 1999 ford expedition?

Bad head gasket , warped or cracked cylinder head


My alarm in my 1999 Ford Expedition won't disarm?

My alarm in my 1999 Ford Expedition won't disarm. What do i do.. Lynn


What oil do you use on a 1999 Ford Expedition?

5W-30 ( according to the 1999 Ford Expedition Owner Guide )


Kind of oil for 1999 Ford expedition?

5W-30 ( according to the 1999 Ford Expedition Owner Guide )


Will 6 lug 24 in rims fit on 1999 ford expedition?

No , a 1999 Ford Expedition has ( 5 ) lug rims


How many lugs on a 1999 expedition?

5 per wheel on the 1999 Ford Expedition


Reg coolant or dexcool for expedition 2000?

According to the Owner Guide , it originally came with a 50 / 50 mixture of Ford Premium engine coolant ( green color ) and distilled water The Owner Guide shows not to use Ford Extended Life coolant ( orange in color ) and DO NOT use Dexcool


Will 6 lug 24in chrome rims fix a 1999 ford expedition?

No , the 1999 Ford Expedition has ( 5 ) lug rims