Parts for your 2018 Subaru Forester

Understanding and Maintaining the Timing Belt on the 2018 Subaru Forester

The 2018 Subaru Forester is a popular SUV well-regarded for its reliability and performance, especially in Australian conditions. When discussing engine maintenance components, many people are curious about the timing belt. However, the 2018 Forester does not actually use a timing belt. Instead, Subaru equips the Forester with a timing chain, which changes the maintenance approach quite a bit.

So why doesn't the 2018 Subaru Forester use a timing belt? Timing belts are often found in engines as a critical component that synchronises the rotation of the crankshaft and camshaft(s), ensuring the engine's valves open and close at the proper times during each cylinder's intake and exhaust strokes. Timing belts are usually made from rubber and need replacement at regular intervals - often every 60,000 to 100,000 kilometres - because they wear out and can fail. Failure of a timing belt can cause significant engine damage, which means owners need to be careful to keep up with replacements.

However, Subaru, including the 2018 Forester, typically uses a timing chain instead of a timing belt. Timing chains are made from metal links and run inside the engine with lubrication from the engine oil. This design means the timing chain is generally much more durable and doesn't need the frequent replacements that timing belts require. Timing chains are considered 'lifetime' components under ideal conditions, though they still need to be checked as the vehicle ages or racks up high mileage.

The decision to use a timing chain in the Forester is based on its durability and ability to reduce regular maintenance costs. Since timing chains do not require scheduled replacement, this appeals to many drivers who want to spend less time and money on servicing. On the other hand, timing chains can stretch and wear over time. When this happens, the chain can cause poor engine performance, unusual noises, or even engine damage if left unchecked.

Because the 2018 Subaru Forester is equipped with a timing chain, maintenance is largely focused on ensuring the engine oil is changed regularly and kept clean. The timing chain depends on proper lubrication to function well.

Here are some important tips and advice about timing chain maintenance as part of servicing a 2018 Subaru Forester:

• Regular oil changes: Changing the engine oil at the recommended intervals is crucial. Dirty or degraded oil can accelerate timing chain wear. Subaru recommends changing the oil approximately every 6,000 to 10,000 kilometres depending on driving conditions, so it's important to keep up with this schedule.
• Use the right oil: Always use the engine oil type and grade specified in the owner's manual. The correct oil helps provide optimal lubrication and protection for the timing chain and other engine components.
• Listen for unusual noises: A rattling or clattering noise from the engine area, especially shortly after starting the vehicle, can be a sign of timing chain issues. If noticed, it's best to have the vehicle inspected immediately.
• Regular inspections: While timing chains don't have a fixed replacement interval, mechanics will typically inspect the chain tensioner, guides, and overall condition during major servicing milestones or if there are symptoms of trouble.
• Timing chain tensioner and guides: These parts help keep the chain tight and properly aligned. Over time, tensioners can lose effectiveness and guides can wear out, so replacing these parts when recommended can prevent bigger and more expensive repairs later.

Ignoring timing chain maintenance or waiting too long to address symptoms can result in costly repairs. For instance, if the timing chain slips or breaks, it can cause the pistons and valves to collide, leading to catastrophic engine damage. Fortunately, such failures are rare when regular oil changes and maintenance are performed.

The beauty of having a timing chain in the 2018 Subaru Forester is peace of mind for owners who want less fuss with maintenance. It is always a good idea to consult the Subaru Forester's owner's manual or a qualified Subaru mechanic to make sure servicing conforms to manufacturer guidelines. This can help spot any early warning signs and keep the vehicle's engine running smoothly for many years and kilometres.

So, while owners won't need to schedule timing belt replacements on their 2018 Forester, they should still be mindful of the timing chain's health by keeping the engine oil fresh and promptly attending to any noises or performance issues. Staying on top of these aspects means the timing chain will typically last the lifetime of the vehicle without needing replacement, contributing to the Forester's reputation as a dependable and low-maintenance SUV.