STP® - Fuel Additives Comparison Guide
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| STP® Gas Treatment | STP® Fuel Injector & Carburetor Treatment | STP® Super Concentrated Fuel Injector Cleaner | STP® Complete Fuel System Cleaner | STP® Octane Booster | STP® Diesel Fuel Treatment & Injector Cleaner | |
| Purpose | Keeps fuel injectors and intake valves clean | Keeps fuel injectors & carburetor clean | Unclogs dirty fuel injectors | One treatment cleans entire fuel system | Uses maximum level of MMT to restore performance | Keeps diesel engine fuel injectors clean & improves lubricity |
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| Usage Frequency | Regularly when you fill up | Regularly when you fill up | Once every oil change | Twice per year | Regularly when you fill up | Regularly when you fill up |