Parts for your 2017 Subaru Forester-Sump plug washers

Sump Plug Washers on the 2017 Subaru Forester: What You Need to Know

When it comes to servicing the 2017 Subaru Forester, many owners often ask about the role of sump plug washers. These small but essential components are part of many vehicles' oil drain plug setups. But are sump plug washers actually used on the 2017 Forester? The answer is yes, they are an integral part of the oil pan assembly and play a vital role in ensuring the engine runs smoothly.

The sump plug washer, sometimes called a crush washer or gasket, sits between the oil drain plug and the sump (or oil pan). Its job is straightforward but crucial: it creates a tight seal to keep engine oil from leaking out. Over time, without this washer, oil could slowly seep from the drain plug area, potentially causing engine damage due to low oil levels or just messy leaks under the car. For the Forester, Subaru recommends the use of a copper or aluminium washer designed to deform slightly when the plug is tightened, making a leak-proof seal.

Many car owners don't realise sump plug washers are often considered a 'consumable' component. That means they are designed to be replaced each time the oil is changed. Reusing an old washer can compromise the seal, increasing the risk of leaks. Because the 2017 Forester's drain plug threads into an aluminium sump, it's especially important to replace the washer to avoid stripping threads or damaging the oil pan during reinstallation.

Replacing the sump plug washer is a small but essential step in routine maintenance. Subaru's service manual for the 2017 Forester specifies replacing the washer whenever the oil drain plug is removed. This is easy enough to do yourself or as part of a professional service. Here's why it's worth paying attention to:

• Prevents Oil Leaks: A new washer ensures a proper seal, so oil stays where it's supposed to be.
• Protects Engine Components: Oil leaks can reduce oil levels, leading to increased wear or overheating - never good for longevity.
• Avoids Costly Repairs: By preventing leaks and thread damage, a fresh washer saves money in the long run.

When servicing the 2017 Subaru Forester, the sump plug washer replacement should be a no-brainer. If you're doing your own oil change, just pop the old washer off and slip a new one on before screwing the plug back in. If you're having the service done professionally, make sure your mechanic is using genuine or equivalent quality washers that meet Subaru's specifications.

The material of the sump plug washer also matters. Most commonly, copper washers are used because they are soft enough to deform and create a tight seal but sturdy enough to withstand engine heat and pressure. Aluminium washers can also be found, depending on specific Subaru guidelines or aftermarket recommendations. Whatever the material, the key is to replace it every time you remove the sump plug.

Technically, neglecting to replace the washer can lead to some subtle but tricky problems. Initially, a slightly worn washer may still hold oil without dripping, but over time it can cause slow leaks that are hard to detect until engine oil levels drop noticeably. If left unaddressed, this may trip warning lights or worse, cause damage to internal engine parts.

Most Australian Subaru Forester owners know that a service interval for oil changes is typically every 12 months or 12,500 kilometres, whichever comes first. Given the importance of oil maintenance, the sump plug washer should be given equal attention alongside the oil and oil filter replacement. The small cost of a new washer compared to the peace of mind and engine protection it brings makes it an easy choice.

In essence, sump plug washers on the 2017 Subaru Forester are small but mighty. They quietly keep the engine oil where it belongs and prevent leaks that could lead to costly repairs or damage. Whether you're a DIY enthusiast or trust a mechanic with your maintenance, insisting on replacing the washer with each oil change is smart for the health of your Forester's engine.

Keep an eye on your oil changes, don't skip the sump plug washer replacement, and your Forester will reward you with reliable performance and fewer headaches down the track.