Skip to Content

The Oil Type, Weight, And Capacity Of A Buick LaCrosse

The sleek and sporty Buick LaCrosse received rave reviews when it was first introduced in 2004. Since then, it has become quite popular, especially outside the US. Today, we will elaborate on all there is to tell about the engine oil used in Buick LaCrosse. Here is a short answer.

The first generation of Buick LaCrosse (2004-09) uses 5W-30 Mobil 1 High Mileage Engine Oil. The second generation of Buick LaCrosse (2009-16) uses AcDelco dexos 1 synthetic blend 5W-30. The latest generation uses 0W-20 Royal Purple Synthetic Engine Oil for L4 engines and 5W-30 ACDelco Full Synthetic for V6 Engines.

*The engine oils used in Buick LaCrosse are not limited to these brands only. All engine oils fulfilling the requirements given below will work well with your Buick LaCrosse.

This summarized answer leaves out some important aspects of engine oil used in a car. To get an answer to all of your questions about the engine oil used in Buick LaCrosse, go through the topics mentioned below. In this article, we have shed some light on the oil capacity and the optimum oil type for Buick LaCrosse. The method(s) to check the engine oil level and changing of engine oil have also been discussed.

Also read: How Many Miles Can A Buick LaCrosse Last? (Answered)

What Is The Oil Type Used In Buick LaCrosse?

Buick LaCrosse has spawned across three generations, with each generation possessing several models. In the subsequent paragraphs. we have enlisted all of the major prerequisites that you’ll need to tick mark before buying the right oil type for your car.

  • The first generation of Buick LaCrosse (2004-09) uses engine oils that are API approved and have the GM6094M specification.
  • The second generation of Buick LaCrosse (2009-16) uses engine oils that meet the dexos1TM specification. You will also see the API symbols on the optimum engine oils for this generation.
  • The third generation of Buick LaCrosse (2017-Present) uses engine oils that meet the dexos1TM gen-2 specifications. You can see the dexos1 gen-2 sticker on the engine oil bottle.

Also read: The Complete Cost Of Maintaining A Buick

What Is The Viscosity/Thickness of Oils Used In Buick LaCrosse?

Viscosity refers to how well a certain fluid (in this case engine oil) flows in an engine. Different generations of Buick LaCrosse use engine oils with different viscosities.

  • The first generation of Buick LaCrosse uses engine oils with the standard oil weight (viscosity) of 5W-30. In area of extreme cold where temperature falls below -20°F, you can use 0W-30 engine oil as well. Mobil 1 High Mileage Engine oil meets the requirements for this generation. For 5W-30 engine oil for this generation, click here.
  • The second generation of Buick LaCrosse also uses engine oils with oil weight of 5W-30. In area of extreme cold where temperature falls below -20°F, you can use 0W-30 engine oils. ACdelso dexos1 synthetic blend is recommended. For the right engine oil, click here.
  • The third generation of Buick LaCrosse have two types of engines.

For 2.4L L4 Engines:

Oil with a viscosity of SAE 0W-20 works best with this type of engine. Royal Purple Synthetic Motor Oil works best with these engines. For the 0W-20 engine oil, click here.

For 3.6L V6 Engine

Standard oil weight (viscosity) of 5W-30 is used. In area of extreme cold where temperature falls below -20°F, you can use 0W-30 engine oil as well. For the 5W-30 engine oil, click here.

ACDelco dexos1 full synthetic is recommended. Valvoline High Mileage Synthetic Blend works best with this engine.

What is The Oil Capacity of a Buick LaCrosse?

Oil Capacity refers to the amount of oil your car’s engine needs to run optimally. The oil capacities of various models of Buick LaCrosse are mentioned below.

 Gen 1 (2004-09)

Engine ModelOil Capacity
3.8L V6 Engine4.5 Qt
5.3L V8 Engine6.0 Qt

Gen 2 (2009-16)

Engine ModelOil Capacity
3.6L V6 Engine6.0 Qt
2.4L L4 Engine5.0 Qt

Gen 3 (2017-Present)

Engine ModelOil Capacity
3.6L V6 Engine6.0 Qt
2.5L L4 Engine5.0 Qt

 When To Change The Oil of A Buick LaCrosse?

  • All Buick LaCrosse models have been equipped with a computer system that indicates when an oil change is needed.
  • When your engine oil life will be up, you will see a CHANGE ENGINE OIL SOON message pop up. Change your car’s engine oil within the next 1000 km.
  • If the message doesn’t appear, it is suggested to get your engine oil and filter changed at least once a year.
  • If the system is ever reset accidentally, we suggest you to change the oil after 5000 km since the last oil change. It is important to reset the oil life system whenever the oil is changed.

How To Check The Oil Level of A Buick LaCrosse?

General Motors suggests that you check the oil level of your Buick regularly, every 650 km. Follow the given steps to check the engine oil of your Buick LaCrosse.

  • Park the vehicle on a level ground. It is advised to check the engine oil after your car has been off for at least two hours.
  • Pull out the dipstick using the hoop, wipe it with a clean paper towel or cloth, then push it back in all the way.
  • Remove it again, keeping the tip down, and check the level.
  • If the oil is below the cross-hatched area, add 1 qt of the recommended engine oil.

How To Reset The Oil Level of A Buick LaCrosse?

It is recommended to reset the system whenever the engine oil is changed so that the system can calculate when the next engine oil change is required.

To reset the system, follow these steps.

  • Firstly, display REMAINING OIL LIFE on the DIC using the DIC controls on the right side of the steering wheel.
  • When remaining oil life is low, the CHANGE ENGINE OIL SOON message will appear on the display.
  • Press V on the DIC controls and hold down for a few seconds to clear the CHANGE ENGINE OIL SOON message and reset the oil life at 100%.
  • If you accidentally reset the oil level, it cannot be reset accurately until the next oil change.
  • The system is reset when the CHANGE ENGINE OIL SOON message is off.
  • If the CHANGE ENGINE OIL SOON message comes back on when the vehicle is started, the engine oil life system has not been reset. Repeat the procedure.

Sources