You will have to call a dealership or refer to a owner's manuel or Chilton book. It is hard to find this information without the manufactuer and model of the truck.
A litre can will hold 1.057 quarts.
3 - 3.5 I restore these cars. The 2,4 litre engine hold 5 quarts. 3 - 3.5 quarts is not enough.
For the 1998 Ford Contour ( according to the Owner Guide ) With engine oil filter change The 2.0 litre four cylinder engine takes ( 4.5 U.S. quarts of 5W-30 ) The 2.5 litre V6 engine takes ( 5.8 U.S. quarts of 5W-30 )
1.25 litre
According to the 2000 Lincoln LS Owner Guide : With engine oil filter change : ( for the 3.0 litre V6 engine , 6.7 U.S. quarts ) ( for the 3.9 litre V8 engine , 6.0 U.S. quarts )
According to the 2003 Lincoln LS Owner Guide : With engine oil filter change : For the 3.0 litre V6 engine ( 6.9 U.S. quarts of 5W-20 engine oil ) For the 3.9 litre V8 engine ( 6.5 U.S. quarts of 5W-20 engine oil )
According to the 2007 Ford Fusion Owner Guide : With engine oil filter change : For the 2.3 litre four cylinder engine ( 4.5 U.S. quarts of 5W-20 engine oil ) For the 3.0 litre V6 engine ( 6.0 U.S. quarts of 5W-20 engine oil )
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 )
9.5 quarts
According to the 2003 Mercury Sable Owner Guide : With engine oil filter change : For the 3.0 litre " Vulcan " V6 engine ( 4.5 U.S. quarts of 5W-20 engine oil ) For the 3.0 litre " Duratec " V6 engine ( 5.5 U.S. quarts of 5W-20 engine oil )
Engine about 5.25 quarts of 10w30Engine about 5.25 quarts of 10w30
Engine oil 4 quarts