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Italian tuneup is a slang automotive term for attempting to restore engine performance by driving a car at high engine speed (RPM) and load. This is done to try and burn off carbon deposits.

Italian tuneup is a slang automotive term for attempting to restore engine performance by driving a car at high engine speed (RPM) and load. This is done to try and burn off carbon deposits.

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[–] 2 pts 1y

I don't know if premium makes all that much difference if your car uses regular. Both have about the same amount of detergents added by the manufacturer.

Sustained highway driving with a good brand of regular (or premium) will clean out deposits, especially if the car was predominantly used for short trips or city driving (which creates deposits because the engine never gets to full operating temperature under load). Sustained highway driving at ~2000RPM in high gear allows the engine to attain operating temperature and provides a sustained load so the detergent in the fuel can do its best job on existing deposits.

I use B-12 in the gas every year or two to help to clean the whole fuel system, fuel injectors, valves and combustion chamber. There are cleaners ("detergents") mixed into regular gas by the manufacturer to prevent deposits but the B-12 boosts their concentration to do a better job to clean out existing deposits more quickly.

[–] 2 pts 1y

I try to get Top Tier gasoline(en.wikipedia.org) since it's endorsed by the various car manufacturers.