Premium Double Filtered Pure 2-EHN, 2-Ethyl-Hexyl Nitrate Cetane Booster. Diesel Additive to Improve Cold Start, Reduce Engine Knock, Improve Performance & Fuel Economy. 1L

This is a great product. Totally stinks though! Engine seems to run a bit smoother and accelerates nicely. Not so sure on any fuel savings at this time. But early days

I was sceptical at first but researched the product a little before ordering it. I can honestly say I have been so impressed . I added the recommended dose to a half a tank of supermarket diesel in my 2015 Transit van,( 130k miles). The result was quite remarkable, an immediate engine tone change, more power, quicker acceleration and after half a tank of fuel the mpg had increased from 34 to 46mpg. I then did the same dose again to half a tank of fuel and it increased again to 48mpg. The engines running more smoothly too so I have to say 100% prepared to recommend and endorse this product. Ps. So confident in it that I'm now using it in my 2021 mercedes C class amg convertable , remarkably impressive. I'm recommending it to all my friends.

Seems like it makes a difference to engine running and hopefully helps with mileage. I've bought a few times and rate this product. Packaging very good also.

Does what it says on it. Product not not pricey as well.

Can't say if it works or not. Didn't notice any difference over 300 miles. Now the cars been changed

I’ve been using this stuff on multiple vehicles for a while now, on higher mileage stuff I’ve been mixing it with a small amount of 2 stroke mineral oil as well. If you use premium fuel regularly, this may not be of any use, but if you often fill up like me at the cheapest / nearest station, a small amount of ehn 99 imo improves fuel economy, engine running in general, cold starts, limits diesel smoke and just an overall appears to give a better running, smoother cleaner vehicle. More so if you have high mileage or older diesels like me. Also, beware of your friends stealing some from you.

Engine certainly a lot quieter on tick over and while driving (2014 Ford Tourneo Custom 2.2 chain driven on 70,000 miles). I use premium fuel anyway but I don't know if it makes for more fuel efficiency as I'm of the mind it does what it does. If I wanted better fuel economy I would have a smaller motor. Before at just under 30 in top gear when you accelerated it need to be dropped a gear now it doesn't. Will I buy again YES you know when the engine ticks over a lot quieter and smoother that's it doing some good

I have used this product for some time and i'm satisfied that it does what it says on the tin (container). I always fill up at supermarket filling stations and i'm convinced it brings this diesel up to premium brand fuel with increased cetane numbers. Cheaper than Archoil but just as good. The plastic case for the spout is a bonus too, keeping the smell contained.