--- product_id: 602988521 title: "SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack)" brand: "safecastle" price: "$82.46" currency: USD in_stock: true category: "Safecastle" url: https://www.desertcart.us/products/602988521-safecastle-pri-d-complete-diesel-treatment-super-concentrated-diesel-fuel store_origin: US region: United States of America --- # Treats up to 256 gallons Reduces fuel pump wear by 45% Prolongs diesel fuel storage life SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) **Brand:** safecastle **Price:** $82.46 **Availability:** ✅ In Stock ## Summary > ⛽ Keep your diesel fresh, your engine happy, and your emergency ready—because second chances don’t fuel themselves. ## Quick Answers - **What is this?** SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) by safecastle - **How much does it cost?** $82.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/602988521-safecastle-pri-d-complete-diesel-treatment-super-concentrated-diesel-fuel) ## Best For - safecastle enthusiasts ## Why This Product - Trusted safecastle brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Professionals:** Highly rated with a 4.7-star average, this additive is a must-have for any serious diesel user. - • **Maximize Your Fuel's Lifespan:** Super concentrated formula treats a massive 256 gallons, ensuring your diesel stays fresh and ready. - • **Engineered for Emergency Readiness:** Keeps emergency diesel fuel stable and sludge-free, so your equipment never fails when you need it most. - • **Restore Diesel to Refinery Freshness:** Revives aged diesel fuel, extending storage life and maintaining peak engine efficiency. - • **Boost Engine Performance & Reliability:** Enhances fuel lubricity to reduce wear on fuel pumps by up to 45%, cutting costly maintenance. ## Overview SAFECASTLE PRI-D Complete Diesel Treatment is a super concentrated additive designed to treat up to 256 gallons of diesel fuel. It prolongs fuel storage life by preventing degradation and sludge buildup, restores aged diesel to refinery freshness, and improves engine performance by increasing fuel lubricity. This additive reduces wear on fuel pumps by up to 45%, making it essential for emergency preparedness and long-term diesel engine maintenance. ## Description Buy SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack): Diesel Additives - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - Emergency diesel fuel can degrade over time - Storing diesel fuel with PRI-D diesel treatment will prolong the storage time of your emergency fuel and can actually restore diesel to refinery freshness if needed. - Power Research Inc PRI-D diesel treatment is ideal for emergency diesel fuel treatment. It increases the lubricity of your fuel, keeps tanks and fuel lines sludge free, and improves engine performance. - For an emergency preparedness minded person, the value of PRI-D cannot be calculated. This diesel treatment product keeps fuel at peak stability levels and prevents fuel degradation during long-term storage. This is important because one of the most common failures of emergency equipment is bad fuel that has been stored too long. - Another key benefit of PRI-D is extended life of fuel pumps. Due to the high lubricity of this additive, wear reduction on ULSD fuels can be reduced by up to 45 percent. This can really reduce maintenance costs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B096Y89G8F | | Best Sellers Rank | #152,935 in Automotive ( See Top 100 in Automotive ) #114 in Diesel Additives | | Brand | SAFECASTLE | | Customer Reviews | 4.7 4.7 out of 5 stars (88) | | Date First Available | June 10, 2021 | | Item Weight | 1 pounds | | Manufacturer | Pri | | Manufacturer Part Number | Pri-d | | Package Dimensions | 7.05 x 4.37 x 2.13 inches | ## Images ![SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) - Image 1](https://m.media-amazon.com/images/I/61NpAUzZ7VS.jpg) ![SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) - Image 2](https://m.media-amazon.com/images/I/81DxGSx2T6L.jpg) ![SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) - Image 3](https://m.media-amazon.com/images/I/81lwI2NJ7uL.jpg) ![SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) - Image 4](https://m.media-amazon.com/images/I/81Ev0X9nIGL.jpg) ![SAFECASTLE PRI-D Complete Diesel Treatment – Super Concentrated Diesel Fuel Additive Treats up to 256 Gallons, Helps Support Fuel Lubricity and Stability for Diesel Engines, 16 oz (1 Pack) - Image 5](https://m.media-amazon.com/images/I/81A2KfyTcfL.jpg) ## Available Options This product comes in different **Size, Flavor** options. --- ## 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.us/products/602988521-safecastle-pri-d-complete-diesel-treatment-super-concentrated-diesel-fuel](https://www.desertcart.us/products/602988521-safecastle-pri-d-complete-diesel-treatment-super-concentrated-diesel-fuel) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-16*