Subaru Fuel Additive SA718

Subaru recommend the use of their Fuel Additive every 6,000km to help reduce combustion chamber deposits, therefore reducing the engines octane requirement. An engine with carbon build up can require a higher octane fuel to avoid detonation or pinging compared to a clean engine. Added to the tank as well having an Upper Engine Clean using Subaru Upper Engine Cleaner performed as part of every logbook service. These two items combined work well to ensure your Subaru’s engine doesn’t suffer from a buildup of carbon and keep it running like Subaru intended.