---
product_id: 734951723
title: "SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack))"
brand: "safecastle"
price: "FREE"
currency: EUR
in_stock: false
url: https://www.desertcart.sk/products/734951723-safecastle-pri-d-fuel-diesel-treatment-for-lubricity-and-stability
store_origin: SK
region: Slovakia
---

# Prolongs diesel storage life Prevents sludge & engine wear Boosts fuel lubricity by 45% SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack))

**Brand:** safecastle
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🛡️ Keep your diesel fresh, your engine happy, and your emergency ready—because second chances don’t wait.

## Quick Answers

- **What is this?** SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) by safecastle
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/734951723-safecastle-pri-d-fuel-diesel-treatment-for-lubricity-and-stability)

## 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

- • **Sludge-Free Fuel Lines:** Prevents sludge buildup to maintain smooth fuel flow and optimal engine performance.
- • **Maximize Engine Longevity:** Reduces fuel pump wear by up to 45%, cutting costly maintenance downtime.
- • **Super Concentrated Formula:** A little goes a long way—16 oz packs deliver powerful protection for extended storage.
- • **Keep Your Emergency Fuel Fresh:** Restores diesel to refinery-fresh condition, ensuring readiness when it matters most.
- • **Cut Emissions & Boost Efficiency:** Improves combustion stability for cleaner, more efficient diesel engine operation.

## Overview

SAFECASTLE PRI-D Fuel Diesel Treatment is a super concentrated additive designed to extend diesel fuel storage life, restore fuel quality, and enhance engine performance by increasing lubricity and preventing sludge buildup. It reduces fuel pump wear by up to 45%, lowers maintenance costs, and supports cleaner emissions, making it essential for emergency preparedness and long-term diesel reliability.

## Description

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. PRI-D reacts with fuel upon contact, providing greatly enhanced fuel lubricity & deposit control benefits demanded by today’s engines. The laboratory & field proven benefits are multiple: ● Peak firing pressure (pmax) is boosted as much as 4 bar ● Specific fuel consumption is reduced as much as one percent ● Carbon & fuel system deposits are inhibited ● Fuel injection pump wear is reduced as much as 45 percent ● Fuel stays fresh, ignition quality improved. Degraded fuels are restored. ● Tanks & fuel lines remain free of slime & sludge ● Carbon monoxide (CO), unburned hydrocarbons (HC) & particulate matter(PM) are significantly reduced Improved Performance, Maintenance, & Emissions Reductions– CARB/EPA & power plant testing verifies PRI-D capability to improve the combustion process for optimum, long-term engine performance & efficiency & emissions reduction.

## 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 |
|---------------|-------|
| Manufacturer | Pri |
| Brand | SafeCastle |
| Item part number | Pri-d |
| Manufacturer Part Number | Pri-d |
| Manufacturer | Pri |

## Images

![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) - Image 1](https://m.media-amazon.com/images/I/41iUayzZhiS.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) - Image 2](https://m.media-amazon.com/images/I/61NpAUzZ7VS.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) - Image 3](https://m.media-amazon.com/images/I/51YkBC5+UoS.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) - Image 4](https://m.media-amazon.com/images/I/81CCPHZtN-S.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (16 Oz (2 Pack)) - Image 5](https://m.media-amazon.com/images/I/71Zp5K0NZIS.jpg)

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**Shop now:** [https://www.desertcart.sk/products/734951723-safecastle-pri-d-fuel-diesel-treatment-for-lubricity-and-stability](https://www.desertcart.sk/products/734951723-safecastle-pri-d-fuel-diesel-treatment-for-lubricity-and-stability)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-31*