Hyundai Tucson: Checking the engine oil
Engine oil is essential to the performance and service of the engine. It is suggested that you check the oil level at least once a week in normal use and more often if you are on a trip or driving in severe conditions.
Recommended Oil
The engine oil quality should meet the following classification. API SJ, SL or ABOVE, ILSAC GF-3 or ABOVE
NOTE: o For good fuel economy, SAE 5W-20 (5W- 30), ILSAC GF-3 engine oil is preferred regardless of regional option and engine variation. o If SAE 5W-20, ILSAC GF-3 engine oil is not available, secondary recommended engine oil for corresponding temperature range can be used.

To Check the Oil Level
Before checking the oil, warm up the engine to the normal operating temperature and be sure your car is parked on level ground. Turn the engine off. Wait five minutes , then remove the dipstick, wipe it off, fully reinsert the dipstick and withdraw it again. Then note the highest level the oil has reached on the dipstick. It should be between the upper ("FULL") and lower ("LOW") range.
WARNING: Be very careful not to touch the radiator hose when checking the engine oil as it may be hot enough to burn you.
Adding Oil
If the oil level is close to or below the "L" mark, add oil until it reaches the "F" mark. To add oil: 1. Remove the oil filler cap by turning it counterclockwise. 2. Add oil, then check the level again. Do not overfill. 3. Replace the cap by turning it clockwise.
The distance between the "F" and "L" marks is equal to about 1 quart of oil.
WARNING: Be very careful not to touch the radiator hose when adding the engine oil as it may be hot enough to burn you.
See also:
Vehicle loading
Loads
Properly loading your vehicle will provide maximum
return of vehicle design performance.
Before loading your vehicle, familiarize yourself
with the following terms for determining your
vehicle's weight ratings, with or without a
trail ...
Recommended cold tire inflation pressures
Tire label located on the driver's side of
the center pillar outer panel gives the
cold tire pressures recommended for
your vehicle with the original tire size,
the number of people that can be in your
vehicle and vehicle capacity weight. ...

Engine compartment