Product reviewsRed Line 85 Diesel Additive Fuel Enhancer 12OZ Increases Power Cetane Booster

Engine Cleaner and Fuel Enhancer

My wife and I drive Diesel cars. I put a measured "shot" in each car. The shot is determined by the volume of the fuel tank in each of the 2 cars. My Toyota Auris is 45mlls & my wifes Kia Sportage is 50mmls. I add the shot on most fill ups and I believe it gives the engines a boost and a clean each time it is used and we have used this product for some years now and will continue to do so.My Auris returns an average of 58 mpg around and about and 63-64 on the motorway, fantastic.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: jjcraceandrally

Cut diesel smoke. Turn off diesel cat warning lights.

This is an excellent product which is highly under-rated. If you have an old smoky diesel you want to get through the MOT a bottle of this in the tank will solve all your problems.

Verified purchase:  Yes | Condition: new | Sold by: advantage-motor...

Red line diesel additive

Very good product has helped to keep my injections clean in over 120,0000 miles

Verified purchase:  Yes | Condition: new | Sold by: camautodevelopm...

How could you tell in most cases ?

When you use a additive like this its extremely difficult to know if its actually helped, for me personally I would like to notice a feel in engine performance or every day running of my vehicle, I never noticed any difference whatsoever so its not something I will purchase again.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: advantage-motor...

Excellent additive. It works A1.

Top top product. ...A1

Verified purchase:  Yes | Condition: new | Sold by: camautodevelopm...

Great product

Does what it says

Verified purchase:  Yes | Condition: new | Sold by: camautodevelopm...

Great product...does what it says!

Verified purchase:  Yes | Condition: new | Sold by: advantage-motor...

Improved performance and reduced injector noise

I have been buying this from DemonTweaks for some time and having tried many other similar products, this is the best one. Performance is greatly improved and the engine sounds nice. Also low down torque is improved. Excellent productRead full review...

Verified purchase:  Yes | Condition: new | Sold by: demontweeksdirect

Redline 85

Fantastic stuff

Verified purchase:  Yes | Condition: new | Sold by: camautodevelopm...

Fuel additive

Definitely made a positive difference

Verified purchase:  Yes | Condition: new | Sold by: camautodevelopm...