{"id":5244,"date":"2025-04-04T10:52:50","date_gmt":"2025-04-04T05:22:50","guid":{"rendered":"https:\/\/c38a2c2a6e.nxcli.io\/intl\/?page_id=5244"},"modified":"2025-06-10T16:06:52","modified_gmt":"2025-06-10T10:36:52","slug":"fuel-additives-faqs","status":"publish","type":"page","link":"https:\/\/stp.com\/intl\/maintenance-advice\/faqs\/fuel-additives-faqs\/","title":{"rendered":"Fuel Additives"},"content":{"rendered":"\t\t
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Home<\/a><\/span><\/span><\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What is the fuel system? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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A system that consists of the fuel tank, fuel lines, fuel pump, fuel filter and fuel injectors or carburetor. This system allows for gasoline storage in the vehicle, filters out particles, delivers gasoline to the intake air system, and mixes the air and gasoline, in the correct ratio, so that it can be efficiently burned in the engine.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What are fuel injectors? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Electrically operated valves that inject a fine spray of fuel, in the proper amount, into the engine\u2019s intake port. The amount of fuel sprayed into the engine varies according to the engine temperature, speed, and load, and is controlled by the vehicle\u2019s onboard computer.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What is the combustion chamber? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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It\u2019s the place in the engine between the cylinder head and the top of the piston where the fuel\/air mixture is compressed by the piston and ignited by the spark plug.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Where does sludge come from? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Sludge is a thick, sticky residue that can form inside your engine through a combination of combustion by-products (oil oxidation residue, carbon and water). Water condenses as a result of a hot engine cooling down. The oil mixes with the resulting water and forms a thick sludge that sticks to the engine parts. Frequent cold starts and short trips contribute to this condition by not allowing the engine oil to heat up enough to vaporize and remove the water. Sludge is detrimental in that it can clog key oil passages such as oil drain-back holes and, in some cases, block the oil pickup screen in the oil pan, causing engine oil starvation (i.e., not enough oil). STP Oil Additive products contain detergents, which can help suspend sludge in the motor oil and prevent it from accumulating inside your engine.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How often should I use STP Oil Treatment products? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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STP\u00ae\u00a0Oil Treatment products can be added at any time and are best added at every oil change. They should, however, only be used once per oil change.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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My car is relatively new; do I need to use STP Petrol Injector Cleaner? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Deposits start to form after a vehicle has done as little as 1000 miles so we would recommend\u00a0STP Petrol Injector Cleaner\u00a0is used every 3000 miles.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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My car relatively new; do I need to use STP Diesel Injector Cleaner? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Deposits start to form after a vehicle has done as little as 1000 miles so we would recommend STP Diesel Injector Cleaner is used every 3000 miles.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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There is a fault with my injectors, should I use STP Petrol Injector Cleaner? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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We recommend you try\u00a0STP Petrol Injector Cleaner\u00a0before visiting a mechanic. If\u00a0STP Petrol Injector Cleaner\u00a0is used every 3000 miles it will help to keep your injectors clean.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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There is a fault with my Injectors, should I use STP Diesel Injector Cleaner? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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We recommend you try STP Diesel Injector Cleaner before visiting a mechanic. If STP Diesel Injector Cleaner is used every 3000 miles it will help to keep your injectors clean.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How do I use STP Power Booster? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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STP Power Booster\u00a0is easy to use; simply add to your fuel tank every time you fill up your petrol.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Why do I need to use STP Petrol Treatment? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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STP Petrol Treatment\u00a0is designed to help keep engines clean by preventing rapid build-up to harmful dirt, gum and deposits in the fuel system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Why do I need to use STP Diesel Treatment? <\/h3><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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STP Diesel Treatment\u00a0is designed to help keep engines clean by preventing rapid build-up to harmful dirt, gum and deposits in the fuel system.\u00a0STP Diesel Treatment\u00a0also has the added benefit of stopping exhaust smoke.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

What is the fuel system? A system that consists of the fuel tank, fuel lines, fuel pump, fuel filter and fuel injectors or carburetor. This system allows for gasoline storage in the vehicle, filters out particles, delivers gasoline to the intake air system, and mixes the air and gasoline, in the correct ratio, so that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":4911,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-5244","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nFuel Additives - STP All Other International<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/stp.com\/intl\/maintenance-advice\/faqs\/fuel-additives-faqs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fuel Additives - STP All Other International\" \/>\n<meta property=\"og:description\" content=\"What is the fuel system? 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