---
product_id: 731958806
title: "SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (32 Oz (06 Pack))"
brand: "safecastle"
price: "€ 457.97"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.gr/products/731958806-safecastle-pri-d-fuel-diesel-treatment-for-lubricity-and-stability
store_origin: GR
region: Greece
---

# Prolongs diesel fuel 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 (32 Oz (06 Pack))

**Brand:** safecastle
**Price:** € 457.97
**Availability:** ✅ In Stock

## Summary

> 🛢️ Keep your diesel fresh, your engine happy, and your emergency ready—because downtime is not an option!

## 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 (32 Oz (06 Pack)) by safecastle
- **How much does it cost?** € 457.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/731958806-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

- • **Long-Term Stability:** Lock in fuel stability during extended storage—never worry about degraded emergency fuel again.
- • **Sludge-Free Guarantee:** Keep tanks and fuel lines pristine with powerful sludge prevention.
- • **Fuel Freshness Restored:** Revive emergency diesel to refinery-fresh quality for peak performance.
- • **Super Concentrated Formula:** High potency 32 oz treatment packs a powerful punch for maximum value and efficiency.
- • **Maximized Engine Protection:** Cut fuel pump wear by up to 45%, extending engine life and slashing maintenance costs.

## Overview

SAFECASTLE PRI-D Fuel Diesel Treatment is a super concentrated additive designed to enhance diesel fuel lubricity by up to 45%, prevent sludge buildup, and extend fuel storage life. Ideal for emergency preparedness, it restores diesel to refinery freshness, protects fuel pumps from wear, and ensures reliable engine performance during long-term storage.

## 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 |
| Manufacturer Part Number | Pri-d |

## Images

![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (32 Oz (06 Pack)) - Image 1](https://m.media-amazon.com/images/I/91JC-9ah1tL.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (32 Oz (06 Pack)) - Image 2](https://m.media-amazon.com/images/I/617CZR14L7S.jpg)
![SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (32 Oz (06 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 (32 Oz (06 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 (32 Oz (06 Pack)) - Image 5](https://m.media-amazon.com/images/I/71Zp5K0NZIS.jpg)

## Available Options

This product comes in different **Flavor Name, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The only trustworthy fuel additive I will use.
*by S***S on March 30, 2025*

This is a real fuel additive that isn't snake-oil medicine. It is used by the petroleum industry in their own storage systems. I use this to stabilize fuel in a generator. Every 14-months on the day, we fire it up to check the functionality - and every time it starts up and runs at full power without any issues. After the 1 hour runtime test, we drain and discard the old fuel for new...so I can't comment on how long this fuel additive will work beyond 14 months. Note - we do not use fuel with Alcohol mixed in. Before using this product, we constantly ran into fuel degradation problems. Generator is in an unregulated storage shed, so it gets hot/cold. No other fuel additive seemed to work.

### ⭐⭐⭐⭐⭐ Great stuff
*by T***D on April 6, 2025*

Haven’t used it yet but all my research it’s the best you can buy

### ⭐⭐⭐⭐⭐ Fuel additive
*by K***R on January 26, 2025*

It’s exactly what husband wanted

## Frequently Bought Together

- SAFECASTLE PRI-D Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe (32 Oz (06 Pack))
- PRI-G Fuel Stabilizer- Gallon Size Unit Treats 2000 Gallons of Fuel
- Mechanic in A Bottle for Gas & Diesel Fuel Systems 24 oz - 2 Pack

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-23*