Comma DIM400M 400ml Diesel Magic

I mainly do short distances so I use this regularly to help clean out the cobwebs! Before an M.O.T I'll drain down the fuel filter housing and fill with Diesel Magic then go for a spin. Great product that does what it say's and appears to boost performance too!

Really does make a difference

Excellent delivery second bottle I have bought one for spare It certainly quietened my engine and running well very happy !

Used this in my Mk7 Golf and noticed the engine sounded a bit quieter and smoother within a day or two. MPG also went up slightly, so it seems to be doing its job and proved effective Easy enough to use, though I think I lost the little paper seal from under the cap when I poured it in — not a big deal but worth being careful. Smell isn’t too strong, and the bottle feels decent quality. It’s not expensive, so good value if it helps keep things clean and running better. Overall, happy with it. Knocking one star off for the seal issue.

Improves everything it says it will. Used every other month since last service where MOT came back with poor emissions. The car no longer does and the MPG has risen significantly.

was first time ive ever used these things , and can already hear engine has went quieter this is the fourth day and feel the pull in my 2.2 ts mazda 6 and smooth pulling away and gear changes pull is smooth will buy more after car service

It arrived ok but too early to tell if it works.

Car felt more responsive on acceleration. Just mixed with a full tank.