Enhance engine performance, extend vehicle life, and drive with confidence—explore our premium range of fuel and oil additives.
Whether you're driving a diesel truck, a petrol car, or maintaining high-performance machinery, our collection of fuel and oil additives has everything you need to keep your engine running smoothly. We offer top-rated solutions designed to clean, protect, and optimize your vehicle’s performance across all engine types.
Why Use Fuel & Oil Additives?
Fuel and oil additives are formulated to tackle common engine issues like carbon buildup, friction, corrosion, and fuel inefficiency. These powerful solutions improve fuel combustion, enhance lubrication, and keep your engine components clean—ultimately boosting engine power, fuel economy, and reliability.
Shop By Category:
Diesel Fuel Additives
Keep your diesel engine in peak condition with our specialized additives. From fuel stabilizers to diesel fuel conditioners and lubricity enhancers, these products ensure smoother combustion, better mileage, and reduced emissions.
Petrol Fuel Additives
Protect and maintain your petrol engine with additives that clean injectors, improve fuel flow, and prevent carbon deposits. Our petrol additives are ideal for daily drivers and high-performance petrol cars alike.
Engine Oil Additives
Reduce friction and wear with oil additives that enhance lubrication and maintain optimal oil viscosity. Perfect for extending engine life, reducing noise, and ensuring smoother operation.
Lubricant Additives
Get dual-action protection with additives that improve both fuel and oil performance. Designed for maximum efficiency, our lubricant additives support long-term engine health, especially in demanding driving conditions.
Fuel Stabilizers & Conditioners
Ideal for vehicles in storage or seasonal equipment, these additives prevent fuel degradation and maintain fuel system cleanliness—so your engine starts strong every time.
Fuel & Oil Additives
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{"id":7047647461473,"title":"2x 10K Boost Petrol Diesel Car Engine Oil Stop Leak Treats Rubber Seals Gaskets + Caps","handle":"2x-10k-boost-engine-oil-stop-leak-super-treats-rubber-seals-gaskets-caps","description":"\u003cbr data-mce-fragment=\"1\"\u003e10K Boost Engine Stop Leak is formulated to help stop leaks caused by seals and gaskets that can shrink or even crack. It will help to expand and revitalise all rubber engine oil seals, including rear main seals, crankshaft oil seals, timing cover seals etc.\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eImportant\u003c\/strong\u003e - will not treat mechanically defective or non-rubber gaskets.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Information\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eHelps stop leaks caused by seals and gaskets that can shrink or even crack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eHelps stop leaks caused by seals and gaskets that can shrink or even crack.\u003c\/li\u003e\n\u003cli\u003eAdd to engine oil.\u003c\/li\u003e\n\u003cli\u003eSuitable for petrol and diesel engines.\u003c\/li\u003e\n\u003cli\u003eFormulated to stop oil leaks.\u003c\/li\u003e\n\u003cli\u003eTreats rubber seals and plastics.\u003c\/li\u003e\n\u003cli\u003eSize: 375ml each can.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eAlso Includes 4TRESS Chrome Tyre Valve Dust Caps (Free)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4Tress Chrome Tyre Valve Dust Caps screw onto the valve stem of a car tyre to protect it from dust and debris. These particular caps have a sleek and stylish design with a tree emblem on the top, and they are made of high-quality chrome material that is both durable and rust-resistant.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAll images are for illustrative purposes only. Product Design and packaging are subject to manufacturers' changes without prior notice.\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2023-11-11T16:59:26+00:00","created_at":"2023-11-02T00:41:28+00:00","vendor":"Granville","type":"Engine Stop Leak","tags":["Brand_Granville","Price Range_£1 - £20","Type_Engine Oil Additives"],"price":1720,"price_min":1720,"price_max":1720,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":41058627092577,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"1430 - 2PK","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"2x 10K Boost Petrol Diesel Car Engine Oil Stop Leak Treats Rubber Seals Gaskets + Caps","public_title":null,"options":["Default Title"],"price":1720,"weight":36000,"compare_at_price":null,"inventory_quantity":0,"inventory_management":"shopify","inventory_policy":"deny","barcode":"5020618014300","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.acc4u.co.uk\/cdn\/shop\/files\/Enginestopleakpic1.jpg?v=1698885691","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_b5623787-a7ee-4b97-8f0f-f9139343454a.jpg?v=1698885691","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_adf17c7c-be34-4cfc-a71d-be2168df17f9.jpg?v=1698885690","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_b55a281e-d831-4c97-bd58-0343927941b1.jpg?v=1698885690"],"featured_image":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/Enginestopleakpic1.jpg?v=1698885691","options":["Title"],"media":[{"alt":"Engine Stop Leak","id":26313585426529,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/Enginestopleakpic1.jpg?v=1698885691"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/Enginestopleakpic1.jpg?v=1698885691","width":1000},{"alt":null,"id":26313585492065,"position":2,"preview_image":{"aspect_ratio":1.805,"height":512,"width":924,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_b5623787-a7ee-4b97-8f0f-f9139343454a.jpg?v=1698885691"},"aspect_ratio":1.805,"height":512,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_b5623787-a7ee-4b97-8f0f-f9139343454a.jpg?v=1698885691","width":924},{"alt":null,"id":26313585524833,"position":3,"preview_image":{"aspect_ratio":1.0,"height":960,"width":960,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_adf17c7c-be34-4cfc-a71d-be2168df17f9.jpg?v=1698885690"},"aspect_ratio":1.0,"height":960,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_adf17c7c-be34-4cfc-a71d-be2168df17f9.jpg?v=1698885690","width":960},{"alt":null,"id":26313585557601,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_b55a281e-d831-4c97-bd58-0343927941b1.jpg?v=1698885690"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_b55a281e-d831-4c97-bd58-0343927941b1.jpg?v=1698885690","width":1500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cbr data-mce-fragment=\"1\"\u003e10K Boost Engine Stop Leak is formulated to help stop leaks caused by seals and gaskets that can shrink or even crack. It will help to expand and revitalise all rubber engine oil seals, including rear main seals, crankshaft oil seals, timing cover seals etc.\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eImportant\u003c\/strong\u003e - will not treat mechanically defective or non-rubber gaskets.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Information\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eHelps stop leaks caused by seals and gaskets that can shrink or even crack.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eHelps stop leaks caused by seals and gaskets that can shrink or even crack.\u003c\/li\u003e\n\u003cli\u003eAdd to engine oil.\u003c\/li\u003e\n\u003cli\u003eSuitable for petrol and diesel engines.\u003c\/li\u003e\n\u003cli\u003eFormulated to stop oil leaks.\u003c\/li\u003e\n\u003cli\u003eTreats rubber seals and plastics.\u003c\/li\u003e\n\u003cli\u003eSize: 375ml each can.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eAlso Includes 4TRESS Chrome Tyre Valve Dust Caps (Free)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4Tress Chrome Tyre Valve Dust Caps screw onto the valve stem of a car tyre to protect it from dust and debris. These particular caps have a sleek and stylish design with a tree emblem on the top, and they are made of high-quality chrome material that is both durable and rust-resistant.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAll images are for illustrative purposes only. Product Design and packaging are subject to manufacturers' changes without prior notice.\u003c\/strong\u003e\u003c\/p\u003e"}
2x 10K Boost Petrol Diesel Car Engine Oil Stop Leak Treats Rubber Seals Gaskets + Caps
£17.20
10K Boost Engine Stop Leak is formulated to help stop leaks caused by seals and gaskets that can shrink or even crack. It will help to expand and revitalise all rubber engine oil seals, including rear main seals, crankshaft oil seals, timing cover seals etc.Important - will not treat mechanically defective or non-rubber gaskets. Product Informat...
{"id":7047646871649,"title":"2x 10K Boost Car Power Steering System Seals Stop Leak Additive Treatment + Caps","handle":"2x-10k-boost-stop-leak-power-steering-fluid-car-maintenance-fuel-additives-caps","description":"10K Boost Power Steering Fluid will stop and prevent leaks in power steering systems conditioning the seals, it will also help to prevent power steering squeals and chatter. 10K Boost Power Steering Fluid can be used as a top up for the system where a manufacturer recommends this fluid. Not suitable for vehicles where a central hydraulic fluid is required.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eConditions seals and prevents leaks.\u003c\/li\u003e\n\u003cli\u003eHelps reduce power steering noises.\u003c\/li\u003e\n\u003cli\u003eSize: 375ml each can.\u003c\/li\u003e\n\u003cli\u003eFor all power steering systems where an ATF Dexron type fluid is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eDirections for Use\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eRemove power steering fluid reservoir cap and top up fluid to the required level.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eDosage Information \u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eTop up as required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eAlso Includes 4TRESS Chrome Tyre Valve Dust Caps (Free)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4Tress Chrome Tyre Valve Dust Caps screw onto the valve stem of a car tyre to protect it from dust and debris. These particular caps have a sleek and stylish design with a tree emblem on the top, and they are made of high-quality chrome material that is both durable and rust-resistant.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAll images are for illustrative purposes only. Product Design and packaging are subject to manufacturers' changes without prior notice.\u003c\/strong\u003e\u003c\/p\u003e","published_at":"2023-11-11T17:07:06+00:00","created_at":"2023-11-02T00:29:11+00:00","vendor":"Granville","type":"Power Steering Stop Leak","tags":["Brand_Granville","Price Range_£1 - £20","Type_Transmission Additives"],"price":1525,"price_min":1525,"price_max":1525,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":41058625880161,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"1440 - 2PK","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"2x 10K Boost Car Power Steering System Seals Stop Leak Additive Treatment + Caps","public_title":null,"options":["Default Title"],"price":1525,"weight":36000,"compare_at_price":null,"inventory_quantity":7,"inventory_management":"shopify","inventory_policy":"deny","barcode":"5020618014409","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.acc4u.co.uk\/cdn\/shop\/files\/powersteeringstopleakpic2.jpg?v=1698884953","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_683f5433-39e5-44ae-998e-0dbfd098d3d2.jpg?v=1698884953","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_046ca625-1821-46aa-999f-15990ce9a3b1.jpg?v=1698884954","\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_2cf2bfbd-5b42-449e-80b8-3f2d7851a40a.jpg?v=1698884954"],"featured_image":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/powersteeringstopleakpic2.jpg?v=1698884953","options":["Title"],"media":[{"alt":null,"id":26313524445281,"position":1,"preview_image":{"aspect_ratio":1.0,"height":1000,"width":1000,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/powersteeringstopleakpic2.jpg?v=1698884953"},"aspect_ratio":1.0,"height":1000,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/powersteeringstopleakpic2.jpg?v=1698884953","width":1000},{"alt":null,"id":26313524510817,"position":2,"preview_image":{"aspect_ratio":1.805,"height":512,"width":924,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_683f5433-39e5-44ae-998e-0dbfd098d3d2.jpg?v=1698884953"},"aspect_ratio":1.805,"height":512,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic1_683f5433-39e5-44ae-998e-0dbfd098d3d2.jpg?v=1698884953","width":924},{"alt":null,"id":26313524543585,"position":3,"preview_image":{"aspect_ratio":1.0,"height":960,"width":960,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_046ca625-1821-46aa-999f-15990ce9a3b1.jpg?v=1698884954"},"aspect_ratio":1.0,"height":960,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic2_046ca625-1821-46aa-999f-15990ce9a3b1.jpg?v=1698884954","width":960},{"alt":null,"id":26313524576353,"position":4,"preview_image":{"aspect_ratio":1.0,"height":1500,"width":1500,"src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_2cf2bfbd-5b42-449e-80b8-3f2d7851a40a.jpg?v=1698884954"},"aspect_ratio":1.0,"height":1500,"media_type":"image","src":"\/\/www.acc4u.co.uk\/cdn\/shop\/files\/4TRESSDustCapspic3_2cf2bfbd-5b42-449e-80b8-3f2d7851a40a.jpg?v=1698884954","width":1500}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"10K Boost Power Steering Fluid will stop and prevent leaks in power steering systems conditioning the seals, it will also help to prevent power steering squeals and chatter. 10K Boost Power Steering Fluid can be used as a top up for the system where a manufacturer recommends this fluid. Not suitable for vehicles where a central hydraulic fluid is required.\u003cbr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eConditions seals and prevents leaks.\u003c\/li\u003e\n\u003cli\u003eHelps reduce power steering noises.\u003c\/li\u003e\n\u003cli\u003eSize: 375ml each can.\u003c\/li\u003e\n\u003cli\u003eFor all power steering systems where an ATF Dexron type fluid is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eDirections for Use\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eRemove power steering fluid reservoir cap and top up fluid to the required level.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cstrong\u003eDosage Information \u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eTop up as required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eAlso Includes 4TRESS Chrome Tyre Valve Dust Caps (Free)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4Tress Chrome Tyre Valve Dust Caps screw onto the valve stem of a car tyre to protect it from dust and debris. These particular caps have a sleek and stylish design with a tree emblem on the top, and they are made of high-quality chrome material that is both durable and rust-resistant.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eAll images are for illustrative purposes only. Product Design and packaging are subject to manufacturers' changes without prior notice.\u003c\/strong\u003e\u003c\/p\u003e"}
2x 10K Boost Car Power Steering System Seals Stop Leak Additive Treatment + Caps
£15.25
10K Boost Power Steering Fluid will stop and prevent leaks in power steering systems conditioning the seals, it will also help to prevent power steering squeals and chatter. 10K Boost Power Steering Fluid can be used as a top up for the system where a manufacturer recommends this fluid. Not suitable for vehicles where a central hydraulic fluid i...
Enhance engine performance, extend vehicle life, and drive with confidence—explore our premium range of fuel and oil additives.
Whether you're driving a diesel truck, a petrol car, or maintaining high-performance machinery, our collection of fuel and oil additives has everything you need to keep your engine running smoothly. We offer top-rated solutions designed to clean, protect, and optimize your vehicle’s performance across all engine types.
Why Use Fuel & Oil Additives?
Fuel and oil additives are formulated to tackle common engine issues like carbon buildup, friction, corrosion, and fuel inefficiency. These powerful solutions improve fuel combustion, enhance lubrication, and keep your engine components clean—ultimately boosting engine power, fuel economy, and reliability.
Shop By Category:
Diesel Fuel Additives
Keep your diesel engine in peak condition with our specialized additives. From fuel stabilizers to diesel fuel conditioners and lubricity enhancers, these products ensure smoother combustion, better mileage, and reduced emissions.
Petrol Fuel Additives
Protect and maintain your petrol engine with additives that clean injectors, improve fuel flow, and prevent carbon deposits. Our petrol additives are ideal for daily drivers and high-performance petrol cars alike.
Engine Oil Additives
Reduce friction and wear with oil additives that enhance lubrication and maintain optimal oil viscosity. Perfect for extending engine life, reducing noise, and ensuring smoother operation.
Lubricant Additives
Get dual-action protection with additives that improve both fuel and oil performance. Designed for maximum efficiency, our lubricant additives support long-term engine health, especially in demanding driving conditions.
Fuel Stabilizers & Conditioners
Ideal for vehicles in storage or seasonal equipment, these additives prevent fuel degradation and maintain fuel system cleanliness—so your engine starts strong every time.
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