---
product_id: 602988521
title: "PRI-D 32 Oz Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe Pack of 1"
brand: "safecastle"
price: "€ 99.39"
currency: EUR
in_stock: true
reviews_count: 8
category: "Safecastle"
url: https://www.desertcart.com.cy/products/602988521-pri-d-32-oz-fuel-diesel-treatment-for-lubricity-stability
store_origin: CY
region: Cyprus
---

# Prolongs diesel fuel storage life Reduces fuel pump wear by 45% Restores fuel to refinery freshness PRI-D 32 Oz Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe Pack of 1

**Brand:** safecastle
**Price:** € 99.39
**Availability:** ✅ In Stock

## Summary

> ⚡ Keep your diesel fresh, your engine happy, and your emergency ready — don’t get caught off guard!

## Quick Answers

- **What is this?** PRI-D 32 Oz Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe Pack of 1 by safecastle
- **How much does it cost?** € 99.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/602988521-pri-d-32-oz-fuel-diesel-treatment-for-lubricity-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:** Keeps emergency diesel fuel stable and sludge-free during extended storage, preventing costly equipment failures.
- • **Proven Performance Boost:** Increases peak firing pressure by up to 4 bar and reduces fuel consumption by 1%, optimizing power and efficiency.
- • **Fuel Freshness, Guaranteed:** Restores degraded diesel to refinery-fresh quality, ensuring peak engine performance every time.
- • **Maximum Lubricity Protection:** Reduces wear on fuel injection pumps by up to 45%, extending engine life and cutting maintenance costs.
- • **Cleaner Combustion, Lower Emissions:** Significantly reduces carbon monoxide, hydrocarbons, and particulate matter for a greener, more efficient burn.

## Overview

SAFECASTLE PRI-D 32 Oz Diesel Treatment is a super-concentrated additive designed to preserve and restore diesel fuel quality during long-term storage. It enhances fuel lubricity, reduces fuel pump wear by up to 45%, and prevents sludge buildup in tanks and lines. Proven to improve combustion efficiency, reduce emissions, and boost engine performance, PRI-D is essential for emergency preparedness and maintenance cost reduction.

## 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 reducedImproved 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.

Review: Best fuel preservative on the market - I've used PRI-G in my boat fuel, generator fuel, and to treat the gas cans for my ZTR lawnmowers and Stihl Chainsaws, for YEARS.. it's never let me down, NOT ONCE!
Review: PRI-G works! - i have used PRI-G for years to treat stored fuel. It has always worked well. I also use PRI-D with the same good results.

## 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 | B09B1FBLL8 |
| Best Sellers Rank | #51,371 in Automotive ( See Top 100 in Automotive ) #87 in Diesel Additives |
| Brand | SAFECASTLE |
| Customer Reviews | 4.6 4.6 out of 5 stars (56) |
| Date First Available | November 5, 2024 |
| Item Weight | 1.94 pounds |
| Manufacturer | Pri |
| Manufacturer Part Number | Pri-d |
| Package Dimensions | 8.66 x 4.37 x 2.99 inches |

## Images

![PRI-D 32 Oz Fuel Diesel Treatment for Lubricity & Stability Improved Performance, Maintenance, and Emissions Reductions, Maximum Lubricity Protection, Super Concentrated & Safe Pack of 1 - Image 1](https://m.media-amazon.com/images/I/71Js94ElurL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best fuel preservative on the market
*by T***S on December 16, 2025*

I've used PRI-G in my boat fuel, generator fuel, and to treat the gas cans for my ZTR lawnmowers and Stihl Chainsaws, for YEARS.. it's never let me down, NOT ONCE!

### ⭐⭐⭐⭐⭐ PRI-G works!
*by C***S on November 25, 2025*

i have used PRI-G for years to treat stored fuel. It has always worked well. I also use PRI-D with the same good results.

### ⭐⭐⭐⭐⭐ that is actually works to refresh fuel
*by T***K on November 6, 2025*

As advertised

---

## 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.com.cy/products/602988521-pri-d-32-oz-fuel-diesel-treatment-for-lubricity-stability](https://www.desertcart.com.cy/products/602988521-pri-d-32-oz-fuel-diesel-treatment-for-lubricity-stability)

---

*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-09*