STP 16oz Exhaust and Emissions System Cleaner Fuel Additive

[This review was collected as part of a promotion.] I have been planning to do the emission cleaning of my car and this came at the right time. It's a really good brand and easy to use. The instructions are clear. The design is easy to use and effective product. For safety the packaging has good cap that would not spill the liquid out. Overall good product.

[This review was collected as part of a promotion.] I recently tried the STP Fuel ,Exhaust & Emission System Cleaner , and I'm very impressed with the results. It was easy to use just pour it into the fuel tank before filling up inmediately gave me peace of mind knowing it work with gasoline, hybrid, and diesel vehicles. After using it ,noticed my car running smoother and feeling more responsive. I'ts great at help clean the fuel sistem, remove carbon deposit and soot .

[This review was collected as part of a promotion.] It is of very good quality safety the smell is very good does not smell bad the instructions are very good the usability of the product is excellent the smell super

I had a "service engine soon" light and a P0420 code (oxygen sensor issue); I installed a new sensor and turned off the error code but it returned. I decided then to try this product as a last resort as my registration was due in a couple of days, and fortunately my car passed the smog check without a problem.

[This review was collected as part of a promotion.] The STP exhaust emission system cleaner worked really well at helping my vehicle run smoother and improving overall engine performance. After using it in a full tank of gas, I noticed reduced hesitation during acceleration and a smoother idle within a few days. It's easy to use, just pour it into the gas tank and it gave me a peace of mind knowing it helps clean the emissions system and reduce buildup that can affect efficiency over time.

[This review was collected as part of a promotion.] I was very surprised at how easy this was to use! I just poured it it in to the fuel tank of my Toyota and Voila my engine was running so much smoother! My check engine light was on and turned off! Which was awesome! I will purchase this in the future!

[This review was collected as part of a promotion.] The cleaner made my car run better and it’s very reliable. It was easy to apply and the instructions were easy. Now I car runs very smoothly and don’t have problems with it. You can’t even hear my car turn on. That’s how good it it’s

[This review was collected as part of a promotion.] The exhaust in my car often has a smell to it and every once in a while I have to get one of these and use them in my vehicle. It always works really well. I feel like it cleans the admissions and makes it smell a lot better and it helps my car, be healthier, and go a lot longer.

[This review was collected as part of a promotion.] STP reduced th exhaust in my suv significantly. With a trip from NC to SC, I could see its performance at play and has held on quite well. Which is perfect for the gas inflation right now. The instructions were pretty straight forward. The consistency is a slightly heavy liquid, but not too far from gasoline so that it blends in well. We only used one bottle. I would buy this. It didnt remove our check engine light, but it helped in ways we are thankful.

This stuff really did nothing to help %26 did nothing that it advertised, even following directions. After further research %26 multiple studies read %26 videos watch on the subject of these products. i learned pretty much if it does not have PEA like Techtron does, these things are burned up w/in seconds the moment it hits the engine %26 does nothing to really clean.