--- product_id: 341262445 title: "P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline" brand: "amsoil" price: "€ 35.49" currency: EUR in_stock: true reviews_count: 10 url: https://www.desertcart.hr/products/341262445-p-i-performance-improver-additive-12-oz-treat-up-to store_origin: HR region: Croatia --- # Restores engine power & throttle response Boosts fuel mileage by up to 5.7% Cuts harmful emissions for cleaner rides P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline **Brand:** amsoil **Price:** € 35.49 **Availability:** ✅ In Stock ## Summary > ⛽ Unlock peak performance and eco-conscious driving with every drop! ## Quick Answers - **What is this?** P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline by amsoil - **How much does it cost?** € 35.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/341262445-p-i-performance-improver-additive-12-oz-treat-up-to) ## Best For - amsoil enthusiasts ## Why This Product - Trusted amsoil brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Eco-Friendly Drive:** Reduce emissions and breeze through emission tests effortlessly. - • **Engine Longevity Support:** Safe for catalytic converters and oxygen sensors—protect your investment. - • **Fuel Efficiency Maximized:** Experience up to 5.7% better mileage—save more on every tank. - • **Easy & Precise Application:** One 12 oz bottle treats up to 20 gallons—simple maintenance every 4,000 miles. - • **Power & Performance Restored:** Feel the surge with improved throttle response and smoother engine operation. ## Overview Amsoil P.i. Performance Improver Additive is a premium 12 oz fuel additive designed to treat up to 20 gallons of gasoline. It enhances fuel mileage by an average of 2.3%, with potential gains up to 5.7%, reduces harmful emissions, and restores engine power and drivability. Compatible with catalytic converters and oxygen sensors, it’s ideal for professional-grade maintenance every 4,000 miles, ensuring cleaner, smoother, and more efficient rides. ## Description Treat one full tank of gas up to 20 gallons with one bottle of P.i. For very large gas tanks, partially fill to 40 gallons and treat with two bottles of P.i. Using more than two bottles per treatment is not recommended. Treat gas every 4,000 miles of service (or 100 hours for marine, stationary and off-road gasoline-powered engines). P.i. helps pass emission tests by running one tank of treated fuel through the engine prior to testing. Safe for use with catalytic converters, oxygen sensors, oxygenated gas and 10 percent ethanol blended gas. Not recommended for two-cycle engines. Review: Superb. Too Good. - Amazed at its performance. Immediately upped power figures, throttle response, mileage and smoothness by atleast 10% - 15%. Engine vibrations reduced by 30-40%. 80 kmph feels like 60 Review: Best fuel system cleaner that also fights ethanol problems prevalent in India - After doing extensive research for additives that specially target ethanol problems and fuel system cleanliness I found this gem of a product. Used it in my Tata Nexon XZ+ Petrol Car. Recommended usage is every 6,500-7,500 kms. ## Features - Improves fuel mileage an average of 2.3% and up to 5.7% - Reduced emissions - Restored power and performance - Better drivability - See description for more detail info. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RX4J2GX | | Assembly Required | No | | Best Sellers Rank | #10,205 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #29 in Petrol Additives | | Brand | Amsoil | | Customer Reviews | 4.7 4.7 out of 5 stars (32) | | Date First Available | 11 June 2019 | | Exterior | smooth | | Generic Name | GASOLINE | | Item Dimensions LxWxH | 20.3 x 10.2 x 10.2 Centimeters | | Item Weight | 30 g | | Item model number | p.i | | Manufacturer | AMSOIL | | Manufacturer Part Number | AMS-APICN-CA | | Model | Amsoil P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline | | Outer Material | other | | Packer | BW | | Product Dimensions | 20.3 x 10.2 x 10.2 cm; 30 g | | Voltage | 12 Volts | ## Images ![P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline - Image 1](https://m.media-amazon.com/images/I/51MyieTLIML.jpg) ## Questions & Answers **Q: It used in Diesel vehicle** A: Its for Gasoline engine or Petrol engine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Superb. Too Good. *by V***C on 29 November 2025* Amazed at its performance. Immediately upped power figures, throttle response, mileage and smoothness by atleast 10% - 15%. Engine vibrations reduced by 30-40%. 80 kmph feels like 60 ### ⭐⭐⭐⭐⭐ Best fuel system cleaner that also fights ethanol problems prevalent in India *by D***Y on 19 August 2025* After doing extensive research for additives that specially target ethanol problems and fuel system cleanliness I found this gem of a product. Used it in my Tata Nexon XZ+ Petrol Car. Recommended usage is every 6,500-7,500 kms. ### ⭐⭐⭐⭐⭐ Very good *by K***L on 22 December 2024* You will feel the difference instantly. Its better to use it after every 10000 kms. If you have GDI engine, this one is must have. I have 2020 Venue TGDI and the mileage is 22000km. After using this additive, the car runs so smooth and accelerates like new. ## Frequently Bought Together - Amsoil P.i. Performance Improver Additive 12 oz Treat up to 20 Gallons Gasoline - AMSOIL Engine and Transmission Flush : One Treatment Result - AMSOIL Diesel All-in-One, 237 ml, Improves Performance and Protection --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/341262445-p-i-performance-improver-additive-12-oz-treat-up-to](https://www.desertcart.hr/products/341262445-p-i-performance-improver-additive-12-oz-treat-up-to) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-16*