Chevrolet 4500 HD 2023 Manual page 245

244 Vehicle Care
according to the following instructions. Park
the vehicle on a level surface and check the
engine oil level before starting or at least
30 minutes after turning off the engine.
1. Remove the oil dipstick (2) and wipe off
any oil on the oil dipstick.
2. Reinsert the oil dipstick fully and then
gently remove it.
The oil is at the correct level if the oil
level is between the "FULL" and "MIN"
marks.
3. If the oil level is too low, add oil to the
"FULL" mark.
4. Reinstall the oil dipstick into position
after checking the oil level.
Any oil level above the "FULL" mark on the
oil dipstick may cause engine malfunctions.
The oil level cannot be checked correctly
when the engine is running.
If the engine has been running, wait at least
30 minutes before checking.
Adding the Engine Oil
When the engine oil level is near or below
the "MIN" mark on the oil dipstick, remove
the oil filler cap (1) and add the oil. Remove
the oil dipstick (2) at this time. Use only the
specified engine oil.
Caution
When adding oil, be careful not to spill
any, but keep a workshop rag handy just
in case there are any spills. If any oil
should spill onto the engine, carefully
wipe it away. If this precaution is not
taken, the spilled oil could ignite and a
fire could spread.
(Continued)