ChevronTechron High Mileage Fuel System Cleaner, 12 oz, Pack of 1

One of the best products out there. Backed by science. 2nd largest concentration PEA product (PEA is basically the best cleaning agent for this sort of thing). Noticeable difference after using.

Why did you pick this product vs others?:Chevron Techron High Mileage Fuel System Cleaner works great with my 20-year-old car. Makes my driving smooth, highly recommended.

After I got gas at a sketchy station, my car started making really loud rumbling noises. After it got low, I used this, hoping it would help even a little. It stopped the noise entirely! And I feel my car is running more smoothly as well. I highly recommend this.

I've been using Chevron Techron High Mileage Fuel Additive regularly in my 2019 Volvo S90 Plug-In Hybrid, and it's definitely earned a spot in my maintenance routine. While hybrids don’t rely on the combustion engine as heavily, I’ve found that a dose of Techron every few thousand miles helps keep the fuel system running smoothly, especially when I switch from electric to gas.Pros:Engine runs smoother and feels more responsive after useHelps maintain fuel system cleanliness, especially important for high-mileage enginesEasy to pour, good packaging, and widely availableCons:I didn’t see a dramatic increase in MPG, just a slight improvementIt’s not cheap if you're using it regularly, but I consider it preventative maintenanceOverall, it’s a solid product that does what it claims—cleaning injectors and helping reduce hesitation or rough idling. I’ve noticed less engine noise and more consistent performance since incorporating it into my maintenance schedule. Not magic in a bottle, but a worthy addition for any high-mileage vehicle. Would definitely recommend, especially for hybrid owners who want to protect the fuel system during infrequent engine use.

Works great!

This is a good additive for you car. I bought it because I always keep a supply of it. I do not use it every time I fill my tank. It is better use it after your car is close to being empty. Put it in first before filling the gas tank. With the long neck it makes it easy to put in your tank without spillage. Since my car is a 1999, it has helped me keep my car running good. It does not run hard at all. Buying it from this site is a great value compared to getting it at the auto parts store.

We have two vehicles, one older with decent amount of mileage and a newer one with very high mileage and we find that both vehicles run better and get really good gas mileage using this regularly.

Great product for cleaning injectors on a Ecoboast direct injection engine.