Stanadyne PERFORMANCE FORMULA PREMIUM DIESEL FUEL ADDITIVE 500ML BOTTLE

A very good quality additive which helps with smooth running. It has an anti freeze additive so designed for and suitable for regular use and especially winter.Good price too and usual fast Amazon delivery.

I love it

My diesel car does not do as many miles as it should resulting in an engine not running as good as it should. Tried Stanadyne and the difference is amazing. My car is now running like new. I've used BP Ultimate for years thinking that it would help, but my engine still had some clogging. I am now running on regular diesel and I'm getting better performance than ever. I plan to continue using Stanadyne.Edit...I thought I would give an update on my experience with this additive after a full year of using it. My opinion of this has not changed, it is still extremely good. My 14 year old Xsara Picasso 2.0 Hdi is running even better than when I wrote the original review. I am a retired engineer and college lecturer and I'm not inclined to dream up false virtues, I always tend to be matter of fact and logical. I can without any doubt say that my car is running like it was designed to do and is smoother, quieter and more economicalEdit2...Well here's my latest update... 11 months ago I changed my car to a more modern diesel, (1.6 BlueHDI 120) even though my old faithful was running perfectly. I still do not do a lot of miles, so I decided to continue using Stanadyne additive. The new car has a DPF which as most people know has to regenerate itself when it gets clogged up. In the last 11 months of driving the new car, the car has not needed to regenerate the DPF at all. I honestly believe that is down to using Stanadyne additive. My new car is very smooth, quiet and economical. This stuff just seems to work!

Haven’t noticed any changes yet

It seems to work

I’ve used this diesel additive for the last couple of years & I swear by it.The car runs better,is more responsive & more economical.I’ve used a bottle once a year for a 3L twin turbo diesel & would recommend it to anyone with a diesel engine.I bought this because of the reviews so all these people can’t be wrong.

Use this stuff every now and again to give the van system a good clean fuel efficiency goes up a tad after use

Read positive reviews of this on the USA Amazon comments.Had a distant whistle on the engine when under load (going up steep hills etc)Maybe carbon build up on the Turbo ?Used a bottle over a number of consecutive fills and felt a big difference right from the first. (6 months ago)It is different stuff to Forte & BG44 that I've used previously over the years, which do help to run the engine a little smoother for a while.Will use again intermittently in the future.2.8CRD Wrangler 95,000 milesNow on 107,000 and still using every so often as a preventative measure.Got issues with MPG & performance last year (2020) but was down to a crusted up MAP sensor & later on a dirty MAF sensor. Couldn't clean MAP sensor (too far gone) so purchased new one (Bosch off Amazon £30) wow what a difference. MAF I got from dealers. (Will clean up & keep as a spare)On higher mileage vehicles system cleaners will help but not a total solution. Changing / regularly cleaning the sensors restores performance back also.