STP Diesel Complete Fuel System Cleaner 400 ml

bought this off UK SELECT DEALS, really good product does what it says for a good price, car feels smoother, fuel is lasting longer happy as larry

My BMW (12 years old with 113k milage) started to shake when I’d start it up. It used to feel like it was going to take off but the shaking would only last for about 15 seconds or so. I thought it’d be an expensive fix but came across this and thought I’d give it a try. Filled up a full tank of Diesel and then poured the entire contents of this bottle in immediately after. I didn’t notice much difference whilst driving like some people say (I didn’t have any performance issues anyway). However, the shaking at start-up has finally stopped!It’s recommended to use this product every 4000 miles so I’ll definitely be doing that as it has certainly helped with the shaking issue. I’d recommend this.

I normally use another product which is readily available at supermarket garages, but I thought I'd give this a go. Much more expensive but apparently it is meant to last much longer rather than using half a bottle of that other stuff each time I fill up.Overall I do think it did a good job but I don't think I would buy it again in a hurry.

Works well and I think worth it

As bought for a different fuel engine system

Absolutely does what it says. Saved me £100s.

Didn't see much of a difference. Probably a better idea to stick to the premium fuels instead.

Good. It works for its purpose.