Parts for your 2014 Subaru Forester-Sump plug washers

Sump Plug Washers on the 2014 Subaru Forester: What You Need to Know

When it comes to servicing a 2014 Subaru Forester, many car owners often wonder about the small yet essential components involved in engine oil changes. One such component is the sump plug washer. Is it relevant to the Forester, or is it one of those parts that simply doesn't get used? After consulting official Subaru technical documents and trusted automotive sources, it's clear that the 2014 Subaru Forester does indeed require a sump plug washer. Let's dive into what sump plug washers are, why they matter, and why you should keep an eye on them during servicing.

The sump plug washer, often called a crush washer or sealing washer, is a small ring that fits between the sump plug (the drain plug) and the oil pan. Its primary job is to create a tight seal to prevent oil from leaking out when the sump plug is tightened. Even though it may seem like just a tiny piece of metal or fibre, this washer plays an important role in maintaining the integrity of an engine's lubrication system. For the 2014 Subaru Forester, which has a standard wet sump oil system, using a sump plug washer is a standard practice to ensure there's no oil drip post-service.

During an oil change, the sump plug is removed to allow old oil to drain from the engine's sump. When the plug is refitted, it presses the sump plug washer against the oil pan's surface, forming a seal. This seal stops oil from seeping out under engine pressure and heat. Over time, however, the washer itself compresses and deforms. Because of this, Subaru recommends replacing the sump plug washer with a new one each time the sump plug is removed and refitted. Using an old washer multiple times risks poor sealing, which can lead to annoying oil leaks and even engine damage if unnoticed.

The 2014 Subaru Forester's oil pan is made from stamped steel, and the sump plug threads into this pan. The washer provides a slight cushion and ensures an even distribution of pressure when tightening. Skipping this washer or reusing an old one can cause the plug to either over-tighten or fail to seal correctly, leading to oil leaks.

It's also worth noting that the sump plug washer for the 2014 Forester is usually made of aluminium or copper. These metals have the right amount of softness to deform slightly, providing a perfect seal without damaging the oil pan. Unlike some OEM washers that might be fibre or rubber-based, metal crush washers tend to last longer, but they still shouldn't be reused.

Here are a few key reasons why sump plug washers are important for the 2014 Subaru Forester:

• Prevent oil leaks after an oil change or sump plug removal.
• Protect the threads and mating surfaces of the oil pan.
• Ensure the right torque is maintained on the sump plug without over-tightening.
• Preserve engine health by maintaining oil integrity and preventing loss.

When your 2014 Forester is due for an oil change, it's good practice to replace the sump plug washer as part of the service. Most mechanics will do this automatically, but it's something to check, especially if you're doing your own maintenance. A new washer usually costs just a few dollars but can save a lot of hassle down the track by preventing leaks that could cause sludging or even damage the sump or engine internals.

Replacing the washer is straightforward. After draining the old oil, remove the sump plug and discard the old washer. Put a new washer on the sump plug, then reinstall the plug, tightening it to Subaru's specified torque settings. Over-tightening can strip threads or deform parts, while under-tightening might cause leaks, so following the torque specification is important.

Remember that while the sump plug washer is a small component, its proper replacement can be a small step that makes a big difference. After replacing the washer and refitting the plug, check for any drips after the engine runs for a bit, either by eye or placing some paper towels around the sump plug area.

If the oil leaks persist even after fitting a new washer, it may indicate other issues such as thread damage in the oil pan or a faulty sump plug. In those cases, a professional inspection is recommended.

Overall, sump plug washers are a vital part of the oil maintenance routine on the 2014 Subaru Forester. While they might fly under the radar compared to bigger engine parts, skipping their replacement is a mistake that can lead to unnecessary problems. So whether your Forester is reaching its next service interval or you're planning a DIY oil change, make sure the sump plug washer isn't forgotten - it's the little things like this that help keep your Forester running smoothly for years to come.