STPComplete Petrol Fuel System Cleaner, Car Accessories, 400 ml & GST53200EN Petrol Injector Cleaner 200 ml

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.

Works well and I think worth it

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.

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

Easy to use and car seems more responsive, impossible to say if there is any increase in mileage, if there it I guess it’s minimal.Recommended to use every 4000 miles, will certainly consider doing so.Used in a 10 year old car which has covered 60000 miles.

As bought for a different fuel engine system

Good. It works for its purpose.

STP is a quality Company and have used the DPF cleaner as well to help with the emissions from my Mark VI TDi Golf. Used this product after having a EGR Fault and decided to put into my last full tank of fuel and got a good 55.8MPG over mainly urban and a bit of Motorway driving covering 580miles before filling up.