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Marvel Mystery Oil can be added to gasoline to clean and lubricate the fuel injectors and carburetors and can be added to engine oil to prevent valves from sticking. Can be used in all marine engines to extend spark plug life and improve gas mileage. Great for reducing acid formation and build up.
Marvel Mystery Oil can be added to gasoline to clean and lubricate the fuel injectors and carburetors and can be added to engine oil to prevent valves from sticking. Can be used in all marine engines to extend spark plug life and improve gas mileage. Great for reducing acid formation and build up.

| Part Number | MM14R, 465-MM14R |
| Weight | 7.85-lb |

Marvel Mystery Oil can be added to gasoline to clean and lubricate the fuel injectors and carburetors and can be added to engine oil to prevent valves from sticking. Can be used in all marine engines to extend spark plug life and improve gas mileage. Great for reducing acid formation and build up.

| Part Number | MM14R, 465-MM14R |
| Weight | 7.85-lb |
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