STP Carb Spray Cleaner 500 ml, Cleans and Protects Carburettors, Linkages and Automatic Chokes, Mechanical Car Cleaning Products, Made in the UK

I never write reviews but this small bottle saved me alot of money. I had a engine management light come on regarding adblue error and emissions error. Audi A4 2020 TDi. I thought id give this ago before going to the garage. I put £40 diesel into my tank. Added a bottle and took the car for a blast on the motorway for 20minutes. After 15 minutes the light had dissappeared and no more error. What a life saver.

Just used this morning at 7am. It’s now 10:30 am. I drive my car on eco pro which shows me how many miles I’m saving. Now usually on my two morning journeys I save around 0.6-0.9 well since adding this and doing my normal two journeys I’ve saved a whopping 1.9 miles doing approximately 11 miles! Coincidence? I don’t think so! I will definitely be using it again and won’t be without it now.

Used this in my diesel and noticed the engine felt a bit smoother and started easier after a couple of drives. Might’ve given me a slight bump in fuel economy too, but nothing dramatic. Easy to pour in and no issues with the car after. Good for maintenance, just don’t expect instant night-and-day results.

It did a good job and was easy to use.

Absolutely love it, totally worth the money.Improved throttle response, better fuel consumption.Highly recommend!

Great did it's job well, easy to use

Good stuff.Does what it says on the tin.

No real difference