13.8 quarts, or just do 14 and you'll be fine.
9 quarts
20
If this is the 3.9 Turbo Diesel it probably would take the same as a 1991 which is 8.4 quarts
( 15 quarts ) with engine oil filter change
it takes 14.5 quarts for the isuzu engine in a 2002 model year truck. steve had to find answer in owners manual.
5 quarts is recommended....
Most of the Isuzu npr trucks holds 6 and a half quarts of transmission oil.
A 2006 Isuzu NPR with a 5.2L engine typically requires approximately 6 quarts of engine oil when equipped with a filter change. It's always a good idea to consult the owner's manual or check with a dealership for the most accurate information specific to the vehicle's model and configuration.
4.8 quarts
Most recent inquirey is 20.5 L.......maybe. They hold 13.3qts filter dry......100% correct!! No maybes from this tech.
6.8 quarts
12 quarts 15w40