1985 Buick ELECTRA Oil Capacity, Types, & Filters

Your ultimate DIY maintenance guide for the 1985 Buick ELECTRA oil change is here! No more searching – find all the critical oil specs for your 1985 Buick ELECTRA, 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 1985 Buick ELECTRA oil change!

Scroll Table ➜

Engine & Code	Oil Capacity	Oil Viscosity/Type	Oil Filter
4.3L 6-cylinder [Y] Y	6 quarts (with filter)	SAE 10W-30 (Below 16°C) SAE 15W-40 (-18 To 16°C) 30 (Above 0°C)	GM 25010908 GM 12731179
5.0L 8-cylinder [N] N Diesel	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) SAE 15W-40 (Above -12°C) SAE 20W-20 (Above -7°C) 30 (Above 4°C) SAE 5W-30 (Below 16°C)	GM 25010908 GM 12731179
5.7L 8-cylinder [T] T Diesel	4.5 quarts (with filter)	SAE 10W-30 (Below 16°C) SAE 15W-40 (-18 To 16°C) 30 (Above 0°C)	GM 12737090 GM 25010908
3.0L 6-cylinder [E] E	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) SAE 15W-40 (Above -12°C) SAE 20W-20 (Above -7°C) 30 (Above 4°C) SAE 5W-30 (Below 16°C)	N/A
3.8L 6-cylinder [3] 3	4.5 quarts (with filter)	SAE 10W-30 (Above -18°C) SAE 15W-40 (Above -12°C) SAE 20W-20 (Above -7°C) 30 (Above 4°C) SAE 5W-30 (Below 16°C)	N/A

Select Your 1985 Buick ELECTRA Engine Option

4.3L 6-cylinder Engine Code [Y] Y

Engine:

4.3L 6-cylinder [Y] Y [aka 4.3L V6 (Diesel)]

Body & Trims:

Estate Wagon, Limited, Park Avenue

Oil Capacity:

6 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C)

OEM Oil Filter:

GM 25010908 and GM 12731179

Oil Filter Replaces:

12576499, 19210285, 19256044, 25010324, 25014377, 6437462, 89017342

1985 Buick ELECTRA 4.3L 6-cylinder [Y] Y oil change details

Oil Grade:

Oil Capacity:

6 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C) - This is the preferred choice for continuous, long-distance driving.

Name of Oil Filter:

N/A

Wix Oil Filter:

51036-EA

Wix Air Filter:

N/A

Coolant Capacity:

13.2 quarts

Oil Drain Plug Torque:

30 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y) take?

A complete oil change for the 1985 Buick ELECTRA 4.3L 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 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1985 Buick ELECTRA 4.3L 6-cylinder is using:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C)

Ensure the oil you choose meets the CF standard.

What is the best oil filter for the 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y)?

The factory-recommended OEM oil filter for the 1985 Buick ELECTRA 4.3L 6-cylinder is the GM 25010908 or GM 12731179. If you prefer a top-tier aftermarket option, the Wix 51036-EA is an excellent choice.

What is the oil drain plug torque spec for the 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1985 Buick ELECTRA 4.3L 6-cylinder should be tightened to exactly 30 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 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1985 Buick ELECTRA 4.3L 6-cylinder is the Wix or other equivalent found in air filter cross-reference catalog for this trim compatible with your intake system. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1985 Buick ELECTRA 4.3L 6-cylinder ([Y] Y)?

The total engine coolant (antifreeze) capacity for the 1985 Buick ELECTRA 4.3L 6-cylinder is:

13.2 quarts

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

5.0L 8-cylinder Engine Code [N] N Diesel

Engine:

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

Body & Trims:

Estate Wagon, Limited, Park Avenue

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

OEM Oil Filter:

GM 25010908 and GM 12731179

Oil Filter Replaces:

12576499, 19210285, 19256044, 25010324, 25014377, 6437462, 89017342

1985 Buick ELECTRA 5.0L 8-cylinder [N] N Diesel oil change details

Oil Grade:

API*

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

51045-EA

Wix Air Filter:

42098-EA

Coolant Capacity:

13.2 quarts

Oil Drain Plug Torque:

30 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel) take?

A complete oil change for the 1985 Buick ELECTRA 5.0L 8-cylinder (with engine code [N] N Diesel) requires 4.5 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 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1985 Buick ELECTRA 5.0L 8-cylinder is using:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Ensure the oil you choose meets the API* standard.

What is the best oil filter for the 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel)?

The factory-recommended OEM oil filter for the 1985 Buick ELECTRA 5.0L 8-cylinder is the GM 25010908 or GM 12731179. If you prefer a top-tier aftermarket option, the Wix 51045-EA is an excellent choice.

What is the oil drain plug torque spec for the 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1985 Buick ELECTRA 5.0L 8-cylinder should be tightened to exactly 30 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 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1985 Buick ELECTRA 5.0L 8-cylinder is the Wix 42098-EA. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1985 Buick ELECTRA 5.0L 8-cylinder ([N] N Diesel)?

The total engine coolant (antifreeze) capacity for the 1985 Buick ELECTRA 5.0L 8-cylinder is:

13.2 quarts

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

5.7L 8-cylinder Engine Code [T] T Diesel

Engine:

5.7L 8-cylinder [T] T Diesel [aka 5.7L V8 (Diesel)]

Body & Trims:

Limited, Park Avenue

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C)

OEM Oil Filter:

GM 12737090 and GM 25010908

Oil Filter Replaces:

19210286, 25171377

1985 Buick ELECTRA 5.7L 8-cylinder [T] T Diesel oil change details

Oil Grade:

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C) - This is the preferred choice for continuous, long-distance driving.

Name of Oil Filter:

N/A

Wix Oil Filter:

51045-EA

Wix Air Filter:

N/A

Coolant Capacity:

13.2 quarts

Oil Drain Plug Torque:

30 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel) take?

A complete oil change for the 1985 Buick ELECTRA 5.7L 8-cylinder (with engine code [T] T Diesel) requires 4.5 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 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1985 Buick ELECTRA 5.7L 8-cylinder is using:

SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C)

Ensure the oil you choose meets the CF standard.

What is the best oil filter for the 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel)?

The factory-recommended OEM oil filter for the 1985 Buick ELECTRA 5.7L 8-cylinder is the GM 12737090 or GM 25010908. If you prefer a top-tier aftermarket option, the Wix 51045-EA is an excellent choice.

What is the oil drain plug torque spec for the 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1985 Buick ELECTRA 5.7L 8-cylinder should be tightened to exactly 30 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 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1985 Buick ELECTRA 5.7L 8-cylinder is the Wix or other equivalent found in air filter cross-reference catalog for this trim compatible with your intake system. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1985 Buick ELECTRA 5.7L 8-cylinder ([T] T Diesel)?

The total engine coolant (antifreeze) capacity for the 1985 Buick ELECTRA 5.7L 8-cylinder is:

13.2 quarts

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

3.0L 6-cylinder Engine Code [E] E

Engine:

3.0L 6-cylinder [E] E [aka 3.0L 6-cylinder]

Body & Trims:

All

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

OEM Oil Filter:

N/A

Oil Filter Replaces:

N/A

1985 Buick ELECTRA 3.0L 6-cylinder [E] E oil change details

Oil Grade:

API*

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

51040-EA

Wix Air Filter:

N/A

Coolant Capacity:

13.2 quarts

Oil Drain Plug Torque:

30 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E) take?

A complete oil change for the 1985 Buick ELECTRA 3.0L 6-cylinder (with engine code [E] E) requires 4.5 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 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1985 Buick ELECTRA 3.0L 6-cylinder is using:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Ensure the oil you choose meets the API* standard.

What is the best oil filter for the 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E)?

The factory-recommended OEM oil filter for the 1985 Buick ELECTRA 3.0L 6-cylinder is the specified part recommended by dealer or owner’s manual. If you prefer a top-tier aftermarket option, the Wix 51040-EA is an excellent choice.

What is the oil drain plug torque spec for the 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1985 Buick ELECTRA 3.0L 6-cylinder should be tightened to exactly 30 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 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1985 Buick ELECTRA 3.0L 6-cylinder is the Wix or other equivalent found in air filter cross-reference catalog for this trim compatible with your intake system. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1985 Buick ELECTRA 3.0L 6-cylinder ([E] E)?

The total engine coolant (antifreeze) capacity for the 1985 Buick ELECTRA 3.0L 6-cylinder is:

13.2 quarts

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

3.8L 6-cylinder Engine Code [3] 3

Engine:

3.8L 6-cylinder [3] 3 [aka 3.8L 6-cylinder]

Body & Trims:

All

Oil Capacity:

4.5 quarts (with filter)

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

OEM Oil Filter:

N/A

Oil Filter Replaces:

N/A

1985 Buick ELECTRA 3.8L 6-cylinder [3] 3 oil change details

Oil Grade:

API*

Oil Capacity:

4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

Oil Viscosity/Type:

SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Name of Oil Filter:

N/A

Wix Oil Filter:

51040-EA

Wix Air Filter:

N/A

Coolant Capacity:

13.2 quarts

Oil Drain Plug Torque:

30 ft/lbs (Oil Drain Plug)

Notes:

N/A

How much oil does the 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3) take?

A complete oil change for the 1985 Buick ELECTRA 3.8L 6-cylinder (with engine code [3] 3) requires 4.5 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 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3)?

For optimal engine longevity, the manufacturer recommended motor oil for the 1985 Buick ELECTRA 3.8L 6-cylinder is using:

SAE 10W-30 (Above -18°C)
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

Ensure the oil you choose meets the API* standard.

What is the best oil filter for the 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3)?

The factory-recommended OEM oil filter for the 1985 Buick ELECTRA 3.8L 6-cylinder is the specified part recommended by dealer or owner’s manual. If you prefer a top-tier aftermarket option, the Wix 51040-EA is an excellent choice.

What is the oil drain plug torque spec for the 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3)?

To prevent leaks or stripped oil pan threads, the drain plug on the 1985 Buick ELECTRA 3.8L 6-cylinder should be tightened to exactly 30 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 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3)?

For optimal engine performance and clean airflow, the recommended engine air filter replacement for the 1985 Buick ELECTRA 3.8L 6-cylinder is the Wix or other equivalent found in air filter cross-reference catalog for this trim compatible with your intake system. It is a good maintenance habit to inspect this filter during every oil change.

What is the coolant capacity for the 1985 Buick ELECTRA 3.8L 6-cylinder ([3] 3)?

The total engine coolant (antifreeze) capacity for the 1985 Buick ELECTRA 3.8L 6-cylinder is:

13.2 quarts

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

People also ask – 1985 Buick ELECTRA

What is the oil capacity of a 1985 Buick ELECTRA?

Depending on the specific engine option, the 1985 Buick ELECTRA oil capacity ranges from 4.5 to 6 quarts. Here is the exact oil capacity breakdown for each available engine configuration:

• 4.3L 6-cylinder ([Y] Y): 6 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
• 5.0L 8-cylinder ([N] N Diesel): 4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
• 5.7L 8-cylinder ([T] T Diesel): 4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
• 3.0L 6-cylinder ([E] E): 4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.
• 3.8L 6-cylinder ([3] 3): 4.5 quarts. (with filter). This is the capacity with the oil filter installed. Always check the oil level after refilling.

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

What type of oil does a 1985 Buick ELECTRA use?

Across its 5 available engine configurations, the 1985 Buick ELECTRA uses the following motor oil viscosities: SAE 10W-30 (Below 16°C)SAE 15W-40 (-18 To 16°C) 30 (Above 0°C) and SAE 10W-30 (Above -18°C)SAE 15W-40 (Above -12°C)SAE 20W-20 (Above -7°C) 30 (Above 4°C)SAE 5W-30 (Below 16°C). Using the correct manufacturer-approved oil weight is crucial for engine health. Here are the specific oil type requirements by engine:

• 4.3L 6-cylinder ([Y] Y):
Grade: CF
SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C) - This is the preferred choice for continuous, long-distance driving.

• 5.0L 8-cylinder ([N] N Diesel):
Grade: API*
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

• 5.7L 8-cylinder ([T] T Diesel):
Grade: CF
SAE 10W-30 (Below 16°C)
SAE 15W-40 (-18 To 16°C)
30 (Above 0°C) - This is the preferred choice for continuous, long-distance driving.

• 3.0L 6-cylinder ([E] E):
Grade: API*
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

• 3.8L 6-cylinder ([3] 3):
Grade: API*
SAE 10W-30 (Above -18°C) - SAE 10W-30 is preferred.
SAE 15W-40 (Above -12°C)
SAE 20W-20 (Above -7°C)
30 (Above 4°C)
SAE 5W-30 (Below 16°C)

What is the best oil filter for the 1985 Buick ELECTRA?

The proper oil filter depends on your exact engine code. The 1985 Buick ELECTRA utilizes the following premium aftermarket Wix oil filters across its lineup: 51036-EA, 51045-EA and 51040-EA. Here is the specific OEM and aftermarket filter data for each engine:

• 4.3L 6-cylinder ([Y] Y):
OEM Filter: GM 25010908 or GM 12731179
Wix Filter: 51036-EA

• 5.0L 8-cylinder ([N] N Diesel):
OEM Filter: GM 25010908 or GM 12731179
Wix Filter: 51045-EA

• 5.7L 8-cylinder ([T] T Diesel):
OEM Filter: GM 12737090 or GM 25010908
Wix Filter: 51045-EA

• 3.0L 6-cylinder ([E] E):
OEM Filter: Check Dealer Part or Owner's Manual
Wix Filter: 51040-EA

• 3.8L 6-cylinder ([3] 3):
OEM Filter: Check Dealer Part or Owner's Manual
Wix Filter: 51040-EA

How often should I change the oil in my 1985 Buick ELECTRA?

For modern models running full synthetic oil, oil change intervals are typically every 7,500 to 10,000 miles. However, for older Buick ELECTRA 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 (4.3L 6-cylinder, 5.0L 8-cylinder, 5.7L 8-cylinder, 3.0L 6-cylinder and 3.8L 6-cylinder), you should change your oil at least once a year even if you don’t reach the mileage limit.

Buick ELECTRA – Engine Oil details by Year