1991 Ford Bronco Oil Capacity, Types, & Filters

Your ultimate DIY maintenance guide for the 1991 Ford Bronco oil change is here! No more searching – find all the critical oil specs for your 1991 Ford Bronco, including exact engine oil capacity, the manufacturer recommended oil viscosity and type, and the correct OEM and aftermarket oil filters.

We cover all available engine options categorized by their specific engine codes, ensuring you get pinpoint accuracy for your specific vehicle configuration. Keep reading to discover everything required for a successful 1991 Ford Bronco oil change!

Scroll Table ➜

Engine & Code	Oil Capacity	Oil Viscosity/Type	Oil Filter
4.9L 6-cylinder [Y] Y	6 quarts (with filter)	SAE 5W-30 (All TEMPS)	Ford FL-1-A
5.0L 8-cylinder [N] N	6 quarts (with filter)	SAE 5W-30 (All TEMPS)	Ford FL-1-A
5.8L 8-cylinder [H] H	6 quarts (with filter)	SAE 5W-30 (All TEMPS)	Ford FL-1-A

Select Your 1991 Ford Bronco Engine Option

4.9L 6-cylinder Engine Code [Y] Y

Engine:

4.9L 6-cylinder [Y] Y [aka 4.9L L6 (Gas)]

Body & Trims:

Custom, Eddie Bauer, XL, XLT

Oil Capacity:

6 quarts (with filter)

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

OEM Oil Filter:

Ford FL-1-A

Oil Filter Replaces:

E7TZ-6731-A

1991 Ford Bronco 4.9L 6-cylinder [Y] Y oil change details

Oil Grade:

SEO60

Oil Capacity:

6 quarts. (with filter). Capacity is with the filter installed. When refilling, remove the dipstick to provide proper venting and allow oil to flow into the crankcase smoothly. After refilling, check the oil level and add more if needed.

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

Name of Oil Filter:

N/A

Wix Oil Filter:

51515-EA

Wix Air Filter:

46174-EA

Coolant Capacity:

13.2 quarts - For models WithOut Air Conditioning (AC).
13.7 quarts - For models with Air Conditioning (AC).

Oil Drain Plug Torque:

15-25 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y) take?

A complete oil change for the 1991 Ford Bronco 4.9L 6-cylinder (with engine code [Y] Y) requires 6 quarts (with filter) of engine oil. To ensure safety and performance, always verify the level on the dipstick after refilling.

What type of oil is recommended for the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1991 Ford Bronco 4.9L 6-cylinder is using:

SAE 5W-30 (All TEMPS)

Ensure the oil you choose meets the SEO60 standard.

What is the best oil filter for the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y)?

The factory-recommended OEM oil filter for the 1991 Ford Bronco 4.9L 6-cylinder is the Ford FL-1-A. If you prefer a top-tier aftermarket option, the Wix 51515-EA is an excellent choice.

What is the oil drain plug torque spec for the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1991 Ford Bronco 4.9L 6-cylinder should be tightened to exactly 15-25 ft/lbs (Oil Drain Plug) and we also recommend installing a new crush washer with every oil change.

What is the correct air filter for the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1991 Ford Bronco 4.9L 6-cylinder is the Wix 46174-EA. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1991 Ford Bronco 4.9L 6-cylinder ([Y] Y)?

The total engine coolant (antifreeze) capacity for the 1991 Ford Bronco 4.9L 6-cylinder is:

13.2 quarts - For models WithOut Air Conditioning (AC).
13.7 quarts - For models with Air Conditioning (AC).

Always ensure you use the manufacturer-approved coolant color and type to prevent internal corrosion.

5.0L 8-cylinder Engine Code [N] N

Engine:

5.0L 8-cylinder [N] N [aka 5.0L V8 (Gas)]

Body & Trims:

Custom, Eddie Bauer, XL, XLT

Oil Capacity:

6 quarts (with filter)

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

OEM Oil Filter:

Ford FL-1-A

Oil Filter Replaces:

E7TZ-6731-A

1991 Ford Bronco 5.0L 8-cylinder [N] N oil change details

Oil Grade:

SEO60

Oil Capacity:

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

Name of Oil Filter:

N/A

Wix Oil Filter:

51515-EA

Wix Air Filter:

46174-EA

Coolant Capacity:

13.7 quarts - For models with an Automatic Transmission (AT) and WithOut Air Conditioning (AC).
13.2 quarts - For models with a Manual Transmission (MT) and WithOut Air Conditioning (AC).
14.8 quarts - For models with Supercooling.
13.7 quarts - For models with a Manual Transmission (MT) and Air Conditioning (AC).

Oil Drain Plug Torque:

15-25 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1991 Ford Bronco 5.0L 8-cylinder ([N] N) take?

A complete oil change for the 1991 Ford Bronco 5.0L 8-cylinder (with engine code [N] N) requires 6 quarts (with filter) of engine oil. To ensure safety and performance, always verify the level on the dipstick after refilling.

What type of oil is recommended for the 1991 Ford Bronco 5.0L 8-cylinder ([N] N)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1991 Ford Bronco 5.0L 8-cylinder is using:

SAE 5W-30 (All TEMPS)

Ensure the oil you choose meets the SEO60 standard.

What is the best oil filter for the 1991 Ford Bronco 5.0L 8-cylinder ([N] N)?

The factory-recommended OEM oil filter for the 1991 Ford Bronco 5.0L 8-cylinder is the Ford FL-1-A. If you prefer a top-tier aftermarket option, the Wix 51515-EA is an excellent choice.

What is the oil drain plug torque spec for the 1991 Ford Bronco 5.0L 8-cylinder ([N] N)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1991 Ford Bronco 5.0L 8-cylinder should be tightened to exactly 15-25 ft/lbs (Oil Drain Plug) and we also recommend installing a new crush washer with every oil change.

What is the correct air filter for the 1991 Ford Bronco 5.0L 8-cylinder ([N] N)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1991 Ford Bronco 5.0L 8-cylinder is the Wix 46174-EA. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1991 Ford Bronco 5.0L 8-cylinder ([N] N)?

The total engine coolant (antifreeze) capacity for the 1991 Ford Bronco 5.0L 8-cylinder is:

Always ensure you use the manufacturer-approved coolant color and type to prevent internal corrosion.

5.8L 8-cylinder Engine Code [H] H

Engine:

5.8L 8-cylinder [H] H [aka 5.8L V8 (Gas)]

Body & Trims:

Custom, Eddie Bauer, XL, XLT

Oil Capacity:

6 quarts (with filter)

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

OEM Oil Filter:

Ford FL-1-A

Oil Filter Replaces:

E7TZ-6731-A

1991 Ford Bronco 5.8L 8-cylinder [H] H oil change details

Oil Grade:

SEO60

Oil Capacity:

Oil Viscosity/Type:

SAE 5W-30 (All TEMPS)

Name of Oil Filter:

N/A

Wix Oil Filter:

51515-EA

Wix Air Filter:

46174-EA

Coolant Capacity:

14.8 quarts - For models with a Manual Transmission (MT) and WithOut Air Conditioning (AC).
15.9 quarts - For models with a Manual Transmission (MT) and Air Conditioning (AC), or an Automatic Transmission (AT) WithOut Air Conditioning (AC).

Oil Drain Plug Torque:

15-25 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1991 Ford Bronco 5.8L 8-cylinder ([H] H) take?

A complete oil change for the 1991 Ford Bronco 5.8L 8-cylinder (with engine code [H] H) requires 6 quarts (with filter) of engine oil. To ensure safety and performance, always verify the level on the dipstick after refilling.

What type of oil is recommended for the 1991 Ford Bronco 5.8L 8-cylinder ([H] H)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1991 Ford Bronco 5.8L 8-cylinder is using:

SAE 5W-30 (All TEMPS)

Ensure the oil you choose meets the SEO60 standard.

What is the best oil filter for the 1991 Ford Bronco 5.8L 8-cylinder ([H] H)?

The factory-recommended OEM oil filter for the 1991 Ford Bronco 5.8L 8-cylinder is the Ford FL-1-A. If you prefer a top-tier aftermarket option, the Wix 51515-EA is an excellent choice.

What is the oil drain plug torque spec for the 1991 Ford Bronco 5.8L 8-cylinder ([H] H)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1991 Ford Bronco 5.8L 8-cylinder should be tightened to exactly 15-25 ft/lbs (Oil Drain Plug) and we also recommend installing a new crush washer with every oil change.

What is the correct air filter for the 1991 Ford Bronco 5.8L 8-cylinder ([H] H)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1991 Ford Bronco 5.8L 8-cylinder is the Wix 46174-EA. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1991 Ford Bronco 5.8L 8-cylinder ([H] H)?

The total engine coolant (antifreeze) capacity for the 1991 Ford Bronco 5.8L 8-cylinder is:

Always ensure you use the manufacturer-approved coolant color and type to prevent internal corrosion.

People also ask – 1991 Ford Bronco

What is the oil capacity of a 1991 Ford Bronco?

Depending on the specific engine option, the 1991 Ford Bronco oil capacity ranges from 6 to 6 quarts. Here is the exact oil capacity breakdown for each available engine configuration:

• 4.9L 6-cylinder ([Y] Y): 6 quarts. (with filter). Capacity is with the filter installed. When refilling, remove the dipstick to provide proper venting and allow oil to flow into the crankcase smoothly. After refilling, check the oil level and add more if needed.
• 5.0L 8-cylinder ([N] N): 6 quarts. (with filter). Capacity is with the filter installed. When refilling, remove the dipstick to provide proper venting and allow oil to flow into the crankcase smoothly. After refilling, check the oil level and add more if needed.
• 5.8L 8-cylinder ([H] H): 6 quarts. (with filter). Capacity is with the filter installed. When refilling, remove the dipstick to provide proper venting and allow oil to flow into the crankcase smoothly. After refilling, check the oil level and add more if needed.

Always check your dipstick after refilling to ensure the proper level.

What type of oil does a 1991 Ford Bronco use?

Across its 3 available engine configurations, the 1991 Ford Bronco uses the following motor oil viscosities: SAE 5W-30 (All TEMPS). Using the correct manufacturer-approved oil weight is crucial for engine health. Here are the specific oil type requirements by engine:

• 4.9L 6-cylinder ([Y] Y):
Grade: SEO60
SAE 5W-30 (All TEMPS)

• 5.0L 8-cylinder ([N] N):
Grade: SEO60
SAE 5W-30 (All TEMPS)

• 5.8L 8-cylinder ([H] H):
Grade: SEO60
SAE 5W-30 (All TEMPS)

What is the best oil filter for the 1991 Ford Bronco?

The proper oil filter depends on your exact engine code. The 1991 Ford Bronco utilizes the following premium aftermarket Wix oil filters across its lineup: 51515-EA. Here is the specific OEM and aftermarket filter data for each engine:

• 4.9L 6-cylinder ([Y] Y):
OEM Filter: Ford FL-1-A
Wix Filter: 51515-EA

• 5.0L 8-cylinder ([N] N):
OEM Filter: Ford FL-1-A
Wix Filter: 51515-EA

• 5.8L 8-cylinder ([H] H):
OEM Filter: Ford FL-1-A
Wix Filter: 51515-EA

How often should I change the oil in my 1991 Ford Bronco?

For modern models running full synthetic oil, oil change intervals are typically every 7,500 to 10,000 miles. However, for older Ford Bronco generations (1985-2010) or those using conventional/synthetic-blend fluid, changing the oil and filter every 3,000 to 5,000 miles is highly recommended to prevent sludge buildup. Regardless of engine (4.9L 6-cylinder, 5.0L 8-cylinder and 5.8L 8-cylinder), you should change your oil at least once a year even if you don’t reach the mileage limit.

Ford Bronco – Engine Oil details by Year