bad gauge , bad sending unit - worn out engine
The question should read 1989 Ford F250 7.4 liter engine...Location of Oil Pressure sending unit...
7.5
I'm not a mechanic / technician but I believe that is installed in the upper section of the engine air filter box
It should be the 6.8 liter engine and the capacity is 6 quarts
7.3 Liter Turbo
6.0 gallons
In a 2004 Ford F-250 : Gasoline engine choices ( 5.4 liter V8 and 6.8 liter V10 ) Diesel engine ( I believe that is 6.0 liter )
7.3L turbo
1994-2003
Yes , the Ford 5.4 liter / 330 cubic inch V8 engine is a gasoline engine
'03 6.0 takes 15 quarts. '04 should be the same.
Look at the top of the engine at the rear center