1.4ENGINE OIL AND FILTER
CHECKING AND ADDING OIL
Oil level cannot be accurately measured on a cold engine.
For pre-ride inspection, with motorcycle leaning on jiffy
stand on level ground, oil should register on dipstick
between arrows when engine is cold. Do not add oil to
bring the level to the FULL mark on a COLD engine.
(00185a)
Check engine oil level:
• As part of the pre-ride inspection.
• At each fuel fill.
• At every scheduled service interval.
Type of Oil
Refer to Table 1-5. Use the proper grade of oil for the lowest
temperature expected before the next oil change. For informa-
tion regarding winter needs, see 1.3 FUEL AND OIL.
If it is necessary to add oil and Harley-Davidson oil is not
available, use an oil certified for diesel engines. Acceptable
diesel engine oil designations include CF-4, CG-4, CH-4 and
CI-4. The preferred viscosities for the diesel engine oils, in
descending order, are 20W50, 15W40 and 10W40. At the first
opportunity, see a Harley-Davidson dealer to change back to
100 percent Harley-Davidson oil.
Checking with Cold Engine
1. See Figure 1-1. Unscrew and remove engine oil filler cap
with attached dipstick.Wipe dipstick clean.
2. Reinstall filler cap. Turn filler cap clockwise until it stops.
3. See Figure 1-2. Again, unscrew and remove filler cap and
check oil level on dipstick. If oil level in pan is below lower
mark on dipstick, add enough Harley-Davidson oil to bring
level up between lower mark (1) and cold check level (2)
on dipstick.
NOTE
Be sure to clean oil from dipstick threads. If oil is present on
dipstick threads, it can weep past dipstick o-ring.This condition
may be incorrectly diagnosed as an oil leak.
4. Replace filler cap and screw in securely.
1. ADD QT (lower) mark
2. Cold check level
3. FULL (hot check) mark
Figure 1-2. Engine Oil Dipstick
Checking with Warm Engine
Ride motorcycle until engine is warmed up to operating temper-
ature, then do the following.
1. Idle motorcycle on jiffy stand for 1-2 minutes.
2. Shut motorcycle off and with motorcycle leaning on jiffy
stand on level ground, unscrew and remove engine oil
filler cap with attached dipstick.Wipe dipstick clean.
3. Reinstall filler cap. Turn filler cap clockwise until it stops.
4. See Figure 1-2. Again, unscrew and remove filler cap and
check oil level on dipstick. If oil level in pan is below lower
mark on dipstick, add enough Harley-Davidson oil to bring
level up between lower mark (1) and cold check level (2)
on dipstick.
NOTE
Be sure to clean oil from dipstick threads. If oil is present on
dipstick threads, it can weep past dipstick o-ring.This condition
may be incorrectly diagnosed as an oil leak.
5. Replace filler cap and screw in securely.
1-10 2008 Dyna Service: Maintenance
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