Draining the engine oil is a process where you remove a plug and let the oil drain out the bottom. This is the operation, which comes to most people’s minds when they think of an oil change, and they invariably do it with every service. However, there is another method to remove the oil from the engine, which is called extraction. This involves inserting a device that sucks out the oil, such as a dip stick funnel. Below is a look at both draining and extraction, in terms of pros and cons.
Pros of Draining Oil
- This is fast, since gravity does all the work. It takes about 5 minutes to get all the oil out of a hot engine.
- There is a chance of getting more oil out this way.
- You don’t have to be performing just this one task. Other things can be attended to, such as pulling off the wheel caps.
- This way is more traditional.
- Any debris in the engine comes out when the drain plug is removed.
Cons of Draining Oil
- This can get messy, especially if you don’t hit the target of the drain pan.
- The car has to be raised up, at least enough that the drain plug is accessible.
- Oil pans, usually made of soft metal or plastic, can easily get damaged when you are draining the engine by removing the drain plug.
Pros of Extracting Engine Oil
- This is a clean operation, since all the oil is collected into a container. Messes can be avoided more easily with a spout.
- The car does not need to be raised, which is great if it is a heavy vehicle.
- You do not need to watch out for any damage to the drain plug.
Cons of Extracting Engine Oil
- It can be a noisy affair.
- Air supply is required for most extractors. If compressed air is unavailable, you will have to pump the oil manually.
- All the oil might not come out this way.
- It is likely to take more time than draining, especially with a cold engine.
- If you need to access the filter from the bottom, or inspect the part, the car may have to be raised.
- Some debris in the engine can settle to the bottom.
If you are looking to choose between the two methods, the right answer depends on various things. On a 2.0 FSI, for instance, you do not really need to use an extractor. Get in touch with a reliable auto repair shop to learn more about the processes and see which one applies to your ride.