2026-10-08 · 5 min read
Subaru Outback Timing Chain Guide Malaysia
Both the FB25 and CB18 engines in the Subaru Outback use a timing chain, not a timing belt — there is no scheduled replacement interval for the chain itself. The chain is designed to last the engine's lifetime with regular oil changes. However, using the wrong engine oil grade, extending oil change intervals, or running low on oil can accelerate chain wear and tensioner failure. Rattling sounds at cold start are a warning sign that should be diagnosed promptly.
Outback FB25 Timing Chain
Same as Forester: dual timing chains in the FB25 boxer, one per bank. Reliable with regular full synthetic oil. Given the Outback's heavier use, pay extra attention to oil change intervals — stretched intervals accelerate chain tensioner wear in the boxer layout.