Regal 53 SC Owner's Manual page 214

Checking Engine Oil
The Cummins engine must be level when checking the oil
level itself or incorrect readings will be observed. Make
sure the engine is up to normal temperature. Then wait
at least 15 minutes before checking the engine oil level.
Shut off the engine. This allows the oil to drain into the
oil pan.
For additional lubricating oil recommendations and oil
pan capacity information, refer to Maintenance Specifi ca-
tions.
Note: If you are not sure of the type/oil capacity
of each engine oil pan contact the Cummins Care at
866-549-6458 or determine the oil pan capacity by using
QuickServe Online and the engine serial number.
Fill the lubricating oil pan to the smallest oil pan capacity
listed for your marine engine. See the "Lubricating Oil
System" information sheet. Then add 0.95 litres (1 qt.) of
oil at a time until it reaches the high point on the dipstick.
Record the number of liters/quarts added for future oil
change information.
Engine & Controls
Removing Oil Dipstick
TURN COUNTERCLOCKWISE TO REMOVE
Shown above is the engine mounted dipstick. To remove
from the tube, turn the handle counterclockwise until the
dipstick clears the tabs. Next, pull the dipstick up until
free from the tube. Wipe the tube with a clean, dry cloth
and reinsert until the tube bottom out. Once again re-
move the dipstick and read the oil level.
until you hear a ratchet type noise which means it is se-
cured properly.
25
Oil should be between
the minimum and maxi-
mum cross hatch patterns.
Remove the valve cover
oil threaded fi ll by turn-
ing it counterclockwise.
Fill with the correct type
multi-grade oil as needed.
Reinstall valve cover oil fi ll
knob by turning clockwise