Parts for your 2013 Subaru Legacy

Understanding the Role and Maintenance of the Timing Belt on the 2013 Subaru Legacy

When it comes to the 2013 Subaru Legacy, it's important to know which parts are critical for keeping the engine running smoothly. One common question among owners and enthusiasts is about the timing belt and whether this component is relevant or even used on the 2013 model. Thanks to Subaru's engineering choices, the 2013 Legacy does not use a traditional timing belt. Instead, Subaru opted for a timing chain in this vehicle, which fundamentally changes how owners should think about maintenance and servicing.

For most petrol-powered vehicles, the timing belt is a crucial part of the engine's internal systems, serving as the synchronisation link between the crankshaft and camshaft. This synchronisation ensures the valves open and close at the precise times during the engine's intake and exhaust strokes. Failure of a timing belt can cause severe engine damage, especially if valves and pistons collide. That is why timing belts typically have strict replacement schedules, often recommended around 100,000 kilometres or 5 to 7 years.

However, Subaru, known for its boxer engine layout and unique engineering solutions, chose to use a timing chain on the 2013 Legacy instead of a belt. Timing chains have a different design and operational style. They are metal chains, much like a bicycle chain, and tend to last a lot longer than belts. They are lubricated by the engine oil, so they generally require less frequent replacement, which means less routine maintenance for Legacy owners.

The key reasons Subaru uses a timing chain on the 2013 Legacy centre around durability and longevity. Chains are typically more robust and less prone to sudden failure, which adds peace of mind for the driver. They also reduce maintenance costs over the life of the vehicle since timing chains do not have a scheduled replacement interval like timing belts. So, while there is no timing belt to replace, owners still need to understand that the timing chain and its associated components do require inspection and care.

Here's what to know about timing chain maintenance on the 2013 Subaru Legacy:

• Chain Tensioners and Guides: The timing chain runs on tensioners and guides which maintain proper chain tension and alignment. Over time these components can wear or degrade, particularly the plastic guides, which might become brittle or cracked. Regular servicing can catch these issues early before they lead to chain slippage or noise.
• Listening for Noise: A failing timing chain or its components may start to produce a rattling noise, especially on cold starts. This noise is a red flag that servicing is needed.
• Oil Quality and Change Intervals: Proper lubrication is essential to the timing chain's longevity. Dirty or old oil can accelerate wear on the chain and its components. Subaru recommends oil changes at regular intervals as per the owner's manual to keep the timing chain running smoothly.
• Replacement Rarity: Although timing chains are built to last, they are not indestructible. It is uncommon but not unheard of for timing chains or tensioners to require replacement, especially if the vehicle has very high kilometres or if servicing has been neglected.
• Mechanic Inspections: At major service milestones, mechanics should inspect the timing chain system for any signs of wear or damage. Visual checks and listening tests can reveal potential issues early.

For anyone servicing a 2013 Subaru Legacy, understanding the difference between timing belts and chains is vital to avoiding unnecessary repairs or interventions. The timing chain set-up means fewer scheduled overhauls, but it does not mean ignoring the system altogether. Keeping up with engine oil changes, paying attention to unusual engine noises, and seeking professional inspections during major services will ensure the timing chain remains functioning well.

In short, the 2013 Subaru Legacy does not use a timing belt, instead, it relies on a timing chain for its engine timing needs. This choice reflects Subaru's focus on durability and long-term reliability. While the chain sits out of sight and out of mind for many drivers, staying aware of its condition contributes to a well-maintained, smooth-running engine.

If you're looking after a Subaru Legacy, maintaining good engine oil quality and regularly servicing the car as per Subaru's recommendations are your best bets for keeping the timing chain happy. Should any issues arise, addressing them early with your mechanic can prevent expensive engine repairs down the line.