Quote:
Originally Posted by JCL
BMW designed the engine, and the fuel and lubrication systems, and they specifically advise not adding any additives such as these. Maybe they know something about engine design?
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perhaps they did it because they wanted to avoid any potential warranty scams. a person can put in too much fuel additives and cause problems. bmw didn't want to deal with that so they just outright said no fuel additives whatsoever.