Parts for your 2018 Subaru Exiga-Sump plug washers

Sump Plug Washers for the 2018 Subaru Exiga: What You Need to Know

When it comes to servicing the 2018 Subaru Exiga, one common question that pops up is whether sump plug washers are used and what their role might be. After referencing multiple technical sources, service manuals, and Subaru maintenance guides, it turns out that the 2018 Subaru Exiga does indeed use sump plug washers as a standard part of its oil sump assembly. These washers might seem like a small detail, but they play a crucial role in keeping the engine oil where it belongs and ensuring your Exiga runs smoothly.

Sump plug washers, often also known as crush washers, are typically made of soft metal like aluminium or copper. They are placed between the sump plug and the oil pan itself, specifically designed to create a tight seal and prevent oil leaks. Over time, these washers compress and form a secure barrier that stops oil from seeping out around the sump plug threads.

For the 2018 Subaru Exiga, the sump plug washer is an essential component during oil changes and general maintenance. Skipping out on replacing the washer or reusing an old one can lead to a range of issues, from minor drips to serious oil leaks that could cause engine damage if unnoticed. Unlike the sump plug, which can be tightened multiple times, the washer is a one-and-done part - once it has been crushed, it cannot properly reseal again without being replaced.

Underneath it all, the sump plug and its washer work together to protect the engine oil, the lifeblood of your Subaru Exiga's engine. Without a proper seal, dirt and contaminants can get into the sump or oil can leak out, putting unnecessary strain on engine components. Subaru's engineering design for the 2018 Exiga considers the washer's material and thickness carefully to balance sealing capability with ease of removal during servicing.

So what does this mean for maintenance? Whenever the oil is changed - which for the 2018 Subaru Exiga is generally recommended every 6,000 to 10,000 kilometres depending on driving conditions - the sump plug should be removed, the oil drained, and the sump plug washer replaced. It's a simple but crucial step that often gets overlooked at quick service stops, but it can save you headaches and costly repairs down the track.

Here's why sump plug washers should never be reused on your 2018 Subaru Exiga:

• The washer is designed to deform under torque to create a seal. Once deformed, it cannot return to its original shape and seal effectively again.
• Using an old washer increases the risk of oil leaks because the seal is compromised.
• An oil leak from the sump plug area can rapidly lower oil levels, which may lead to engine overheating and damage.

When you visit a mechanic or perform DIY maintenance on your Subaru Exiga, make sure a new washer is installed every time the sump plug is loosened. The good news is that sump plug washers are inexpensive and widely available. Subaru recommends using genuine washers for the right fit and optimal sealing properties.

It's also a good idea to inspect the sump plug threads and the oil pan surface for damage during oil changes. If there is any noticeable wear or stripping, a professional should address it before refitting the plug and washer. Tightening the plug to the correct torque specification, as outlined in the Subaru Exiga service manual, is another key step. Too loose, and oil will leak. Too tight, and you risk damaging the threads or the washer itself.

Some vehicle owners wonder if they can skip using a washer by relying on thread sealants instead. For the 2018 Subaru Exiga, Subaru does not recommend thread sealants or liquid gasket substitutes on the sump plug. The proper seal relies on the crush washer and correct torque. Allowing a mechanic or yourself to follow the procedure exactly helps maintain engine health and avoids leaks.

To wrap it all up, sump plug washers might be small, but they are essential for the health of the Subaru Exiga's engine. Replacing them every oil change keeps the sump plug sealed tight, prevents oil leaks, and protects your engine's longevity. Whether you take your Exiga to a service centre or handle oil changes yourself, don't overlook these simple washers. They are a cost-effective way to avoid bigger repair bills and keep your Subaru running smoothly.