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Audi A3 + S3 - Petrol/Injector Cleaner - mak

Audi A3 1.6FSI 2005

Have just bought above car and was wondering if it is wise to use a petrol/injector cleaner on this engine. I have always used Red Line SI-1 Complete Fuel System Cleaner as part of the servicing on my old Audi 80 2.0 1995my. Due to the 1.6FSI being a modern engine, is it safe to use on this engine? Red Line high temperature detergents use surface active chemistry which cleans effectively and safely.