Ford F-250 Super Duty (1999 year). Manual — part 44

2. Turn the engine off and wait a few minutes for the oil to drain into the
oil pan.

3. Set the parking brake and ensure the gearshift is securely latched in P
(Park) (automatic transmission) or 1 (First) (manual transmission).

4. Open the hood. Protect yourself from engine heat.

5. Locate and carefully remove the
engine oil level indicator (dipstick).

6. Wipe the indicator clean. Insert the indicator fully, then remove it
again.
• If the oil level is between the MIN and MAX marks, the oil level is

acceptable. DO NOT ADD OIL.

• If the oil level is below the MIN

mark, add enough oil to raise the
level within the MIN-MAX range.

• Oil levels above the MAX mark may cause engine damage. Some oil

must be removed from the engine by a service technician.

7. Put the indicator back in and ensure it is fully seated.

MIN

MAX

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Adding engine oil

1. Check the engine oil. For instructions, refer to Checking the engine
oil in this chapter.

2. If the engine oil level is not within the MIN and MAX ranges, add only
certified engine oil of the recommended viscosity. Remove the engine oil
filler cap and use a funnel to pour the engine oil into the opening.

3. Recheck the engine oil level. Make sure the oil level is not above the
MAX mark on the engine oil level indicator (dipstick).

4. Install the indicator and ensure it is fully seated.

5. Fully install the engine oil filler cap by turning the filler cap clockwise
until three clicks can be heard.

To avoid possible oil loss, DO NOT operate the vehicle with the
engine oil level indicator and/or the engine oil filler cap removed.

Engine oil and filter recommendations

Look for this Certification
Trademark.

Use SAE 5W-30 motor oil certified for gasoline engines by the American
Petroleum Institute (API).

Motor oil displaying the API Certification Trademark will meet all
requirements for your vehicle’s engine.

Ford oil specification is WSS-M2C153-G.

Do not use supplemental engine oil additives, oil treatments or engine
treatments. They are unnecessary and could, under certain conditions,
lead to engine damage which is not covered by your warranty.

Change your engine oil and filter according to the appropriate schedule
listed in the Scheduled Maintenance Guide.

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174

Ford production and aftermarket (Motorcraft) oil filters are designed for
added engine protection and long life. If a replacement oil filter is used
that does not meet Ford material and design specifications, startup
engine noises or knock may be experienced.

It is recommended you use the appropriate Motorcraft oil filter (or
another brand meeting Ford specifications) for your engine application.

BRAKE FLUID

Checking and adding brake fluid

1. Clean the reservoir cap before
removal to prevent dirt or water
from entering the reservoir.

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175

2. Visually inspect the fluid level.

3. If necessary, add brake fluid until
the level reaches MAX. Do not fill
above this line.

4. Use only a DOT 3 brake fluid
certified to meet Ford specifications.
Refer to Lubricant specifications in the Capacities and specifications
chapter.

Brake fluid is toxic.

If you use a brake fluid that is not DOT 3, you will cause
permanent damage to your brakes.

Do not let the reservoir for the master cylinder run dry. This
may cause the brakes to fail.

CLUTCH FLUID (IF EQUIPPED)

Check the clutch fluid level. Refer to the Scheduled Maintenance Guide
for the service interval schedules.

Use only a DOT 3 brake fluid designed to meet Ford specifications. Refer
to Capacities and specifications.

For vehicles equipped with the 5–speed manual transmission,
during normal operation, the fluid level in the clutch reservoir should
remain constant. If the fluid level drops, maintain the fluid level at the
step in the reservoir.

For vehicles equipped with the 6–speed manual transmission,
during normal operation, the fluid level in the clutch reservoir will drop
slightly. As this occurs, maintain the fluid level at the step in the
reservoir.

MAX

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