3-8. ENGINE SERVICE (Contd)
On M939/A1 series vehicles, 7 qts (6.6 L) of oil are required to raise oil level from L mark to H mark on
dipstick. On M939A2 series vehicles, 2 qts (1.9 L) are required to raise oil level from ADD 2 QTS. mark
to FULL mark. Refer to LO 9-2320-272-12 for oil specifications.
If engine oil level is low, remove engine oil filler cap (5), add engine oil, and replace engine oil filler cap
(5). Tighten cap securely wipe away any spilled oil.
After checking or adjusting oil level, wipe dipstick (4) clean and reinstall dipstick (4) in dipstick tube (3).
Make sure dipstick (4) is seated securely.
On M939/A1 series vehicles, turn dipstick (4) handle clockwise to tighten in dipstick tube (3).