According to the 2005 Mercury Mountaineer Owner Guide :
With engine oil filter change :
For the 4.0 liter , SOHC , V6 engine :
( 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil )
No,a transmission on a 2005 mercury mountaineer will not fit on a 2000 mercury mountaineer unless you change the oil message on the mountaineer.
( 5 quarts ) with engine oil filter change for the 4.0 liter SOHC , V6 engine in a 2006 Mercury Mountaineer
More information please - what year ? what engine ?
On a 1999 Mercury Mountaineer , 5.0 litre V8 engine : ( the engine oil pump is INSIDE the oil pan )
For a 2002 Mercury Mountaineer : With engine oil filter change the 4.0 litre SOHC , V6 engine takes : ( 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil )
On a 2001 Mercury Mountaineer with the 5.0 liter V8 engine : The engine oil dipstick is on the drivers side of the engine
Any major brand of SAE 5w30 conventional or synthetic.
5 quarts ( 4.7 liters ) with engine oil filter change
According to the 2000 Mercury Mountaineer Owner Guide : With engine oil filter change : Both the 4.0L SOHC V6 and the 5.0L V8 engines take : ( 5.0 U.S. quarts of 5W-30 )
According to the 2000 Mercury Mountaineer Owner Guide : For the 4.0 litre V6 engine and the 5.0 litre V8 engine : With engine oil filter change : ( 5.0 US. quarts of 5W-30 )
According to the 1998 Mercury Mountaineer Owner Guide : With engine oil filter change : The 5.0 liter V8 engine takes ( 5.0 U.S. quarts of 5W-30 )
You don't mention the model year of Mercury Mountaineer , or the engine size , but : The 4.0 litre Single Over Head Cam , V6 engine in a Mercury Mountaineer has always taken ( 5.0 US. quarts / 4.7 litres of 5W-30 engine oil , with engine oil filter change ) no matter what the model year