5 w 20 for the 3.8 liter V6 engine in a 2003 Ford Mustang ( according to the owners manual )
My 2003 mustang gt sump is 6 quarts
5W-20 , according to the 2003 Ford Mustang Owner Guide
10w-30
The 3.8 liter V6 engine in a 2003 Ford Mustang takes ( 5 quarts ) WITH ENGINE OIL FILTER CHANGE
According to the 2003 Ford Mustang owners manual : With engine oil filter change : The 3.8 liter V6 engine takes ( 5.0 quarts / 4.7 liters of engine oil )
2003 mustang v6
According to the 2003 Ford Mustang Owner Guide : For the 3.8 liter V6 engine : With engine oil filter change : ( 5.0 US. quarts of 5W-20 engine oil )
According to the 2003 Ford Mustang Owner Guide : For the 3.8 liter V6 engine : With engine oil filter change : ( 5.0 US. quarts of 5W-20 engine oil )
( 5W-20 ) according to the 2004 Ford Mustang Owner Guide
The recommended oil is SAE 5W-20
It came from the factory with ( 5W-30 )