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50 reviews
Trial of product
First time using this brand good value however will be unfair to rate as using it in car and motorcycle until all used then I will have more idea if has done what it claims
Verified purchase: Yes • Condition: new • Sold by: thinkprice
Have been using this item for years. Not...
Have been using this item for years. Not only does it keeps the injectors clean, it also cleans the spark plugs.
Verified purchase: Yes • Condition: new • Sold by: cyclonicdeals
Very good product and price would recommend.
Have used STP every year to keep injection system clean.
Verified purchase: Yes • Condition: new • Sold by: premium247
STP Injector Cleaner Adds Extra Engine Performance
Have used this premium product for many years, improves mileage per gallon and gives smoother engine running.
Verified purchase: Yes • Condition: new • Sold by: shopdirect365
Mazda2
Had a suspected blockage in the fuel system on the Mrs' car. Worked great. Recommend to add some quality fuel after flushing the fuel system out using this.
Verified purchase: Yes • Condition: new • Sold by: shopdirect365
Car engine steroids, a booster on wheels.
I had a performance problem, lumpy acceleration. I replaced the plugs which solved most of the problem, but thought the fuel system needed cleaning, including the injectors. I decided to use STP, followed the instruction and after a few hundred miles, the performance is returning. Using cheaper supermarket fuel probably contributed to my problem, but the STP additive definitely helps to cure and restore it's performance. Read full review
Verified purchase: Yes • Condition: new • Sold by: premium247
STP Petrol Injector Cleaner.
Does improve engine performance during first tank use .
Verified purchase: Yes • Condition: new • Sold by: shopdirect365
Did what it says on the tin
Excellent product, helped my engine and taught me not to use cheap petrol from supermarket
Verified purchase: Yes • Condition: new • Sold by: shopdirect365
STP injector cleaner .
Really good product , have used STP for years , you no you always get a quality product that will help prolong your engine for years ! Yes I would recommend!
Verified purchase: Yes • Condition: new • Sold by: fastcardirect_w...
Does what it says
I have been using STP for many years. In the old days one coated all bearings with STP prior to rebuilding. That put me in good stead for some time whilst the bearings settled down.
Verified purchase: Yes • Condition: new • Sold by: handsome-rex