--- product_id: 133046749 title: "Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack" brand: "opti-lube" price: "€ 139.16" currency: EUR in_stock: true reviews_count: 4 category: "Opti Lube" url: https://www.desertcart.hr/products/133046749-opti-lube-xl-xtreme-lubricant-diesel-fuel-additive-8-oz store_origin: HR region: Croatia --- # Concentrated 8oz bottle ULSD-specific formula Year-round engine protection Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack **Brand:** opti-lube **Price:** € 139.16 **Availability:** ✅ In Stock ## Summary > 🛢️ Keep your diesel running smoother, quieter, and cleaner—because your engine deserves the XL treatment. ## Quick Answers - **What is this?** Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack by opti-lube - **How much does it cost?** € 139.16 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/133046749-opti-lube-xl-xtreme-lubricant-diesel-fuel-additive-8-oz) ## Best For - opti-lube enthusiasts ## Why This Product - Trusted opti-lube brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Injector & Pump Cleanser:** Keeps fuel injectors and pumps spotless for smooth, consistent engine performance. - • **All-Season Diesel Defense:** Reliable protection and compatibility with modern diesel engines and emission systems year-round. - • **Heavy-Duty & Everyday Ready:** Perfect for passenger vehicles, pickups, and commercial diesel rigs—maintain peak performance effortlessly. - • **Precision ULSD Lubricity Boost:** Engineered specifically for ultra-low sulfur diesel to maximize fuel system longevity. - • **Concentrated Power in Every Drop:** Small dosage treats large fuel volumes—efficient maintenance without waste. ## Overview Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive is a concentrated 8oz formula designed for ultra-low sulfur diesel engines. It enhances fuel lubricity, cleans injectors and pumps, and supports consistent engine operation across all seasons. Ideal for passenger vehicles, pickups, and heavy-duty diesel applications, it ensures reliable fuel system maintenance with minimal dosage. ## Description Opti-Lube XL Xtreme Lubricant Formula Diesel Fuel Additive is formulated for use with modern diesel engines and fuel systems, including those operating on ultra-low sulfur diesel (ULSD). The formula is designed to supplement the lubricating properties of ULSD and support the normal operation of fuel system components, including fuel pumps and injectors.Routine use helps maintain the cleanliness of fuel injectors and other fuel system components by addressing deposits that can accumulate during normal engine operation. A well-maintained fuel system supports consistent fuel delivery and reliable engine operation. The formula is also designed to help maintain the condition of fuel system components exposed to moisture and normal operating conditions.Opti-Lube XL Xtreme Lubricant is suitable for year-round use and is compatible with modern diesel emission systems. Its concentrated formula treats a large volume of diesel fuel with a small dosage, making it a practical choice for routine fuel system maintenance. When used as directed, it helps support the normal operation of diesel fuel systems in passenger vehicles, pickup trucks, and heavy-duty diesel applications. Review: Great stuff - Works well. Used to do a quart of 2 stroke per fill up. Now I just use this stuff. Keeps engine nice and quiet like the 2 stroke oil did Good stuff. (06 5.9 cummins w/345k) Review: I love this. - I love this. Actually makes my Mercedes RV run quieter. No more injector difficulties on cold mornings either. I now buy the gallon, and refill these to carry along. ## Features - FORMULATED FOR ULSD: Designed for use with ultra-low sulfur diesel (ULSD) to supplement fuel lubricity and support the normal operation of diesel fuel system components, including injectors and fuel pumps. - SUPPORTS FUEL SYSTEM CLEANLINESS: Helps maintain the cleanliness of injectors and fuel system components as part of routine maintenance, supporting consistent fuel delivery and engine operation. - YEAR-ROUND COMPATIBILITY: Suitable for use throughout the year and compatible with modern diesel engines and emission systems when used as directed. - CONCENTRATED TREATMENT: A small amount treats a large volume of diesel fuel, making it a convenient option for regular fuel system maintenance. - ROUTINE DIESEL FUEL MAINTENANCE: Formulated for ongoing use to help maintain fuel system components and support reliable operation in passenger vehicles, pickup trucks, and heavy-duty diesel applications. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01J2CRS1U | | Best Sellers Rank | #755,456 in Automotive ( See Top 100 in Automotive ) #246 in Diesel Additives | | Brand | Opti-Lube | | Brand Name | Opti-Lube | | Container Type | Bottle | | Customer Reviews | 4.3 out of 5 stars 11 Reviews | | Included Components | Opti-Lube XL 8oz Bottles | | Item Form | Liquid | | Item Type Name | Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive | | Item Weight | 3 pounds | | Liquid Volume | 8 | | Manufacturer | Opti-Lube | | Model Number | OPT-XL8 | | Number of Items | 1 | | Package Information | Bottle | | Part Number | OPT-XL8 | | Recommended Uses For Product | Automotive | | UPC | 853001004399 | | Unit Count | 48 Fluid Ounces | ## Product Details - **Brand:** Opti-Lube - **Item Weight:** 3 Pounds - **Liquid Volume:** 8 - **Package Information:** Bottle - **Recommended Uses For Product:** Automotive ## Images ![Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack - Image 1](https://m.media-amazon.com/images/I/71v2y-9nysL.jpg) ![Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack - Image 2](https://m.media-amazon.com/images/I/51FANbUmuIL.jpg) ![Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack - Image 3](https://m.media-amazon.com/images/I/71A-enzCBxL.jpg) ![Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive, 8 oz Bottles, 6-Pack - Image 4](https://m.media-amazon.com/images/I/51liRCcJa5L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great stuff *by M***. on October 5, 2018* Works well. Used to do a quart of 2 stroke per fill up. Now I just use this stuff. Keeps engine nice and quiet like the 2 stroke oil did Good stuff. (06 5.9 cummins w/345k) ### ⭐⭐⭐⭐⭐ I love this. *by G***A on February 16, 2017* I love this. Actually makes my Mercedes RV run quieter. No more injector difficulties on cold mornings either. I now buy the gallon, and refill these to carry along. ### ⭐⭐⭐⭐ Good insurance *by J***M on July 21, 2022* This brand was rated high in the diesel forums. While I can't tell if how well it works, it is good insurance for my diesel engines. I have a 50 gallon tank to fill my diesel tractors and engines; I just pour suggested amount before filling my tank. I also add to my diesel truck tanks before fillup. ## Frequently Bought Together - Opti-Lube XL Xtreme Lubricant Diesel Fuel Additive: 8oz Bottles (6 Pack) - Opti-Lube XPD All Seasons Diesel Fuel Additive: 1 Gallon with Accessories (1 Hand Pump & 2 Empty 8oz Bottles) (1 Gallon XPD with Hand Pump and Regular Accessory Bottles) - Shell Rotella T6 Full Synthetic Heavy Duty Engine Oil 5W-40, 55 Gallon Drum --- ## 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/133046749-opti-lube-xl-xtreme-lubricant-diesel-fuel-additive-8-oz](https://www.desertcart.hr/products/133046749-opti-lube-xl-xtreme-lubricant-diesel-fuel-additive-8-oz) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-27*