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BMW 535 2011: Using fuel additives

My 2011 BMW 535 has 93,000 km on it, has had all required services on schedule, is always fuelled with high-octane top-tier gas, has not had a major problem and runs great. That said, would there be a benefit to using a fuel additive and if so, what type and how frequently? I have not used any additives in the past.

I can’t see any reason for using a fuel additive, particularly as you use high-octane fuel.

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