HYDRA EHN-99, 2-Ethylhexyl-Nitrate 99% Pure 2 EHN Performance Enhancer Cetane Booster Diesel Treatment Additive, 1L Treats up to 1000L.

Excellent stuff after filling tank and adding this to my diesel tank after 2days of use it's gained more MPG with n more black smoke from exhaust when I put foot down absolutely recommend using this if you have a diesel vehicle I will continue to use this

Good quality easy to use good results Always take extra care when working underneath high voltage power lines.

Works...engine sounds smoother...and I think more economy achieved as a result of using it.

Cetane levels in diesel in the UK are low. I took the plunge and bought some of this product. I have a thirsty 2.5litre 4x4 and tow a twin axle caravan. The only painful thing has been watching the fuel gauge move downwards quickly! After adding the recommended amount of this product to my fuel tank - my mpg has increased from 23mpg to 27mpg. The proof is in the pudding & l am pleased l purchased this cetane booster. With the increase of 4mpg - this improvement clearly offsets the costs of this product. Just be careful you don't overdo the amount you add to a tank otherwise this will not be cost effective.

Excellent product

would have provided more stars had the item actually bren delivered with 1 litre of the product!!! I thought when opening it it looked low so I measured it on very accurate scales and the total weight including all the packaging was 1008 gramms!!! 1000 gramms per litre of liquid and the small plastics filler nozzle weighed in at 13 gramms so the actual product was at even the higher estimate only around 930 mls of product!! Very annoying when you have paid for a litre yet been provided with less than this. I have ran several tanks and my mpgs have actually gone down even though I never change either my driving style nor route. This is worrying as now the rev gauge has started to fluctuate and that was after the second tank with this product. I chose a more expensive brand and up my mpgs went as well as stopping the rev fluctuations. I will most definetly not be using or recommending this product as it was a complete fail!!!

Really does the job.

In the past I’ve bought other products for my old VW camper, but after reading the reviews, I decided to try this product. It’s been really good, it’s a little smoother starting and seems to run smoother too