---
product_id: 67516460
title: "Hydra EHN-99"
brand: "hydra"
price: "S$72"
currency: SGD
in_stock: true
reviews_count: 8
url: https://www.desertcart.sg/products/67516460-hydra-ehn-99
store_origin: SG
region: Singapore
---

# Boosts cetane by 4-8 pts Cuts emissions & smoke 1L treats up to 1000L fuel Hydra EHN-99

**Brand:** hydra
**Price:** S$72
**Availability:** ✅ In Stock

## Summary

> ⛽ Unlock peak diesel performance & savings—because your engine deserves the best!

## Quick Answers

- **What is this?** Hydra EHN-99 by hydra
- **How much does it cost?** S$72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/67516460-hydra-ehn-99)

## Best For

- hydra enthusiasts

## Why This Product

- Trusted hydra brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power-Packed Cetane Boost:** Elevate your diesel’s ignition quality by up to 8 points for smoother, more responsive drives.
- • **Eco-Smart Emission Reducer:** Slash harmful emissions and black smoke, aligning performance with greener standards.
- • **Cost-Efficient Fuel Economy:** Experience up to 18% MPG improvement, turning every litre into extra miles and savings.
- • **Trusted by High-Mileage Pros:** Proven to enhance engine smoothness and power even in vehicles with 150,000+ miles—drive with confidence.
- • **Universal Diesel Compatibility:** Optimized for all diesel types including biodiesel, ULSD, red derv, and more—versatility that fits your ride.

## Overview

Hydra EHN-99 is a premium 2-Ethylhexyl-Nitrate diesel additive that boosts cetane rating by 4 to 8 points, improving fuel economy, reducing emissions, and enhancing engine smoothness. Compatible with all diesel fuels including biodiesel, it treats up to 1000 litres per litre of additive, delivering cost-effective performance gains trusted by high-mileage drivers.

## Description

Buy HYDRA EHN-99, 2-Ethylhexyl-Nitrate 99% Pure 2 EHN Performance Enhancer Cetane Booster Diesel Treatment Additive, 1L Treats up to 1000L. at desertcart UK. Free delivery on eligible orders.

Review: It works. - It has taken a while for me to write this review but can now confirm that this works.It has increased my average fuel consumption by 2,4mpg, that may not sound a lot but that is considerable. The other benefits include smoother running and more power making the car better to drive in all circumstances. The vehicle in question being a Volvo V70 D5 with over 150000 miles covered,my average fuel consumption now being 52.9mpg and that is mainly town work. Also my emissions for the MOT were lower than required. I have been precise with dosing, i use a syringe to be accurate. The benefits of this product are real, i have tried them all over the years but this one works, pays for its self.
Review: Gives me an extra 40-50 miles per tank! - I use this alongside their DPB-100 fuel additive, in a high mileage 2009 Audi A4 2.0 TDI ….. before ever using this, I would struggle to achieve over 55mpg on long runs. Ever since dosing my fuel with 30ml of this and 30ml of DPB-100 (to a 60L tank), my MPG has increased and I’m now able to comfortably achieve 65mpg on long runs with the same driving style. Whenever I forget to dose my fuel with this stuff, I see a reduction in MPG to around 60mpg…… so it’s helped improve the economy even when there’s none in system. Overall, my economy is up by 18% since before I used it. A new MAF sensor may also be attributing to that figure, but what cannot be denied is the 8% to 10% improvement in MPG I see between having fuel treated with this and without it. I spend £3000+ a year on fuel, as I do a lot of miles, so an outlay of approx £50 a year on this stuff and the DPB-100 is saving me between £200-£250 a year, as well as having the peace of mind that my engine is running optimally. Also….. I’ve found that it improves supermarket diesel the most, so if you usually use shell or one or the more expensive places, you can save more going for the cheaper supermarket stuff and still see a similar return at the pump. I feel 65mpg for a medium sized 14 year old car with 146,000 on the clock is pretty good going! Treating your fuel with this, ensuring tyre pressures are correct and sticking to 60-65mph on the motorways you’ll save hundreds every year!

## Features

- Harmful if inhaled.
- Harmful if swallowed.
- Harmful in contact with skin.
- Toxic to aquatic life with long lasting effects.
- Powerful Additive: The Diesel Fuel Additive, Hydra 2 EHN, is the best product to give a cetane boost. It is a fuel additive that acts as a performance enhancer which improves economy and performance. This diesel additive enables engines to run smoother with better pickup.
- Reduces Emissions: The diesel cleaner is used as a cetane booster diesel engine application. It is a diesel system cleaner that improves performance and economy in all types of diesel engines whilst reducing harmful emissions.
- Great For Bio Diesel: Hydra EHN-99 is a diesel additive ideal for home-made biodiesel made from cooking oils. It also boosts cetane ratings of any diesel type fuel that has a low cetane rating including red derv, gas oil, diesel, ULSD, MGO etc.
- Cost Effective Boost: The oil additive raises cetane rating by up to 4 to 8 points, this improves cold start. It reduces engine noise, engine knock, black smoke and particulate matter. A little diesel treatment goes a long way, 1 litre treats up to 1000 litres of diesel fuel.
- Customer Satisfaction: Hydra ensures 100% customer satisfaction for all their products. In case of any query related to the performance enhancer diesel treatment, feel free to contact us. We will try providing a solution to our best capacity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BMP6DGM |
| Automotive Fit Type | Universal Fit |
| Brand | HYDRA |
| Brand Name | HYDRA |
| Compatible with Vehicle Type | Car, Truck, Motorcycle |
| Container Type | Bottle |
| Customer Reviews | 4.5 out of 5 stars 1,226 Reviews |
| Flash Point | 76.1 Degrees Celsius |
| Flash point | 76.1 Degrees Celsius |
| Liquid Volume | 5 Litres |
| Liquid volume | 5 Litres |
| Manufacturer | Hydra International Ltd |
| Manufacturer Part Number | FBAUK-2-EHN-1L |
| Package information | Bottle |
| Unit Count | 1000 millilitre(s) |
| Vehicle service type | Car, Truck, Motorcycle |

## Product Details

- **Brand:** HYDRA
- **Liquid volume:** 5 Litres
- **Package information:** Bottle
- **Vehicle service type:** Car, Truck, Motorcycle
- **Flash point:** 76.1 Degrees Celsius

## Images

![Hydra EHN-99 - Image 1](https://m.media-amazon.com/images/I/411nRmcbhAL.jpg)
![Hydra EHN-99 - Image 2](https://m.media-amazon.com/images/I/61kd1PAtMlL.jpg)
![Hydra EHN-99 - Image 3](https://m.media-amazon.com/images/I/61wZ+zsb7EL.jpg)
![Hydra EHN-99 - Image 4](https://m.media-amazon.com/images/I/71XXZcLG3JL.jpg)
![Hydra EHN-99 - Image 5](https://m.media-amazon.com/images/I/71xpbUJUIhL.jpg)

## Questions & Answers

**Q: Questions for the Seller  received 5ltr bottle but no dosing bottle. How much do i put in my tank?**
A: I aimed to put in 10ml per litre of fuel. I bought the smaller bottle with built in dosing chamber on it. I'd measure 2 full (35ml) Chambers worth then fill up with fuel (to mix it about) to the brim.. My tank is 70L and was never totally empty, all overdosing does is waste product..
I've moved on to using 'Dipetane' as a diesel additive now.. Doesn't smell bad in the boot of car (unlike this product) and has increased my MPG & in my opinion is a better product

**Q: How much would you recommend for a 52l fuel tank in my 2008 volvo c30 1.6d please?**
A: Usual dose at 1:1000 (1ml to 1 Litre fuel) to 1:500 (1ml to 0.5 Litre fuel) depending on the quality of fuel and performance increase required.

**Q: Is it safe for Audi a6 c7 ultra 2.0 2016 with ad blue?**
A: Yes  its safe in fact what it it does is it increases the cetane so increases how the diesel expands in the chamber . I use in Mercedes S class . Every 4 tanks I still use premium diesel . I use like this because I'm not doing enough motorway milage . Modern diesel is no good on journeys less than 20 miles so considering petrol .

**Q: What is the difference between this product and the cetane booster that you sell with the brown label**
A: 1.	Hydra Cetane Booster has extra lubricant.

Hydra 2-EHN does not have extra lubricant, as it is designed to be added to homemade bio-diesel which does not require extra lubrication

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works.
*by J***. on 31 July 2023*

It has taken a while for me to write this review but can now confirm that this works.It has increased my average fuel consumption by 2,4mpg, that may not sound a lot but that is considerable. The other benefits include smoother running and more power making the car better to drive in all circumstances. The vehicle in question being a Volvo V70 D5 with over 150000 miles covered,my average fuel consumption now being 52.9mpg and that is mainly town work. Also my emissions for the MOT were lower than required. I have been precise with dosing, i use a syringe to be accurate. The benefits of this product are real, i have tried them all over the years but this one works, pays for its self.

### ⭐⭐⭐⭐⭐ Gives me an extra 40-50 miles per tank!
*by C***S on 9 April 2023*

I use this alongside their DPB-100 fuel additive, in a high mileage 2009 Audi A4 2.0 TDI ….. before ever using this, I would struggle to achieve over 55mpg on long runs. Ever since dosing my fuel with 30ml of this and 30ml of DPB-100 (to a 60L tank), my MPG has increased and I’m now able to comfortably achieve 65mpg on long runs with the same driving style. Whenever I forget to dose my fuel with this stuff, I see a reduction in MPG to around 60mpg…… so it’s helped improve the economy even when there’s none in system. Overall, my economy is up by 18% since before I used it. A new MAF sensor may also be attributing to that figure, but what cannot be denied is the 8% to 10% improvement in MPG I see between having fuel treated with this and without it. I spend £3000+ a year on fuel, as I do a lot of miles, so an outlay of approx £50 a year on this stuff and the DPB-100 is saving me between £200-£250 a year, as well as having the peace of mind that my engine is running optimally. Also….. I’ve found that it improves supermarket diesel the most, so if you usually use shell or one or the more expensive places, you can save more going for the cheaper supermarket stuff and still see a similar return at the pump. I feel 65mpg for a medium sized 14 year old car with 146,000 on the clock is pretty good going! Treating your fuel with this, ensuring tyre pressures are correct and sticking to 60-65mph on the motorways you’ll save hundreds every year!

### ⭐⭐⭐⭐⭐ Miles Miles and more Miles
*by B***3 on 22 November 2022*

This is amazingly smelly stuff but I kid you not it's a bargain and we'll worth the money I bought 1ltr bottle for a test and no lie I normally put £40 of BP diesel and get roughly 130 miles of actual driving but the dash recons 200 miles I drive smooth in city I get bad mpg but rural which I do regularly 70miles a day I get fantastic mpg, I added 0.5ml per ltr of ehn-99 first time and noticed slight improvement on fuel then came the second time 1ml per ltr and oh my gosh I have driven the actual 200 miles and still have 60miles to go I had to share this review, my mpg hasn't changed on dash but actual fuel consumption on eco mode or driving smooth is fantastic and if you have led foot I tell ya what this is your buddy. Your fuel tank will stink when filling up like a stink bug smell and as you pour in if you get any on you it's a massive effort to get rid of the smell of you skin, but I swear if you use it right and wear gloves or be careful you will love this stuff. My next purchase will be maximus but for now I think I could drives for miles and miles and not need to look at my fuel gauge. Its well worth it

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-02-13*