DETROIT DIESEL 53
11. Refill the fuel tank with enough rust preventive fuel
oil such as American Oil Diesel Run-In Fuel (LF4089),
Mobil 4Y17, or equivalent, to enable the engine to
operate 10 minutes.
12. Drain the fuel filter and strainer. Remove the
retaining bolts, shells and elements. Discard the used
elements and gaskets. Wash the shells in clean fuel oil
and insert new elements. Fill the cavity between the
element and shell about two-thirds full of the same rust
preventive compound as used in the fuel tank and
reinstall the shell.
13. Operate the engine for 5 minutes to circulate the
rust preventive throughout the engine.
14. Refer to Section 3.1 and service the air cleaner.
1970 General Motors Corp