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⛽ Keep your high-mileage engine humming like new — don’t let deposits slow your drive!
Chevron Techron High Mileage Fuel System Cleaner is a premium 12 oz formula designed to clean and protect fuel systems in vehicles with over 75,000 miles. It removes harmful deposits, restores engine power, improves fuel economy, and prevents corrosion across multiple metal components. Compatible with all gasoline and ethanol blends, it treats up to 21 gallons per bottle and is ideal for modern and classic cars, light trucks, and SUVs.







| ASIN | B086FFK5H3 |
| Best Sellers Rank | #426 in Automotive ( See Top 100 in Automotive ) #3 in Fuel System Cleaners |
| Brand | Chevron |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,066) |
| Date First Available | March 26, 2020 |
| Item Weight | 5.24 pounds |
| Item model number | 266711163-6PK |
| Manufacturer | Chevron |
| Manufacturer Part Number | 266711163-6PK |
| Model | Techron High Mileage Fuel System Cleaner |
| Product Dimensions | 3.16 x 2.66 x 8.9 inches |
R**N
Reversed yrs of cheap gas use
My old car wouldn’t pass the CA smog test ; dealership said repairs would cost me $3000 / no guarantees . Short story ; i have been using this and it cleared the carbon buildup & passed smog 👍
R**X
Cleans out injectors and carbon
Works great, smoother runni g engine. I wouldn't use anything else.
H**M
No need to have the dealership do it
Excellent. I’ve been using this on both my cars for over twenty years. My wife’s 2013 hybrid gets better gas mileage. Just follow the directions. Save mucho dineros
M**Y
No more oil dilution!
I drive a 2023 Acura with the 2.0 Turbo engine. At my 55,000 mile oil change, I drained out 6 qts of the 5 I put in. Thant's not good! I totally ignore OEM change intervals and change oil and filter every 5,000 miles with fully synthethic, I want this thing to last a looong while! I sent the oil sample for testing and sure enough, fuel dilution... Reading up, one of the suggestions was to add a fuel additive to help clean gunk around the rings so they can seal properly at lower operating tempratures. Enter Chevron Techron... We use it on about every other tank of fuel. Next oil change I did at 3,000 miles to minmize the amount of time using gasoline for engine lubricant and I drained out a little over what I put in. Like, barely over. Todays oil change was at 4,000 miles and I had zero dilution! Drained out a little less than the 5qts I put in! I call that a win! I expect a little oil consumption from a turbo engine being driven like I stole it on a daily basis and that's exactly what I saw! Nothing else different except for the Techron!
C**R
Have used for years in autos, outboards and gas bikes
Have been using this product for years. Dissolves carbon and cleans fuel injectors. I know this because after about 100 miles of adding this to my tank a piece of carbon wedged itself between the gap in two of my spark plugs. Truck began to run very rough so i R&R'd all my plugs and found the carbon in 2 plugs. Also use it in a motorized bike and 2 outboard motors. I think its better than Seafoam for automobiles. Just my opinion.
A**S
Leap of Faith
There is no alternate universe where you can test your vehicle's performance over the years using this product, versus not using it. But as my car passes the 130,000 mile mark I feel the need to do as much as possible to keep it running smoothly. While there is no single standardized, independent "seal" from a third-party testing agency (like the EPA or an independent lab) widely published for public viewing, the formula relies heavily on Chevron's proprietary Polyether Amine (PEA) technology. Independent mechanical testing and user feedback provide robust evidence of its effectiveness. Automotive experts and mechanics have conducted before-and-after endoscopic testing on high-mileage engines. They verified that a single treatment of Techron High Mileage Fuel System Cleaner significantly removes carbon crud from combustion chambers, cylinder heads, and intake valves. Product reviewers consistently report reduced engine hesitation, improved idling, and restorative fuel economy (often 2-4 MPG gains). Experts on enthusiast forums frequently discuss the base chemistry. Users and mechanics universally advise applying one bottle to a near-empty tank, then filling completely, typically doing so every 3,000 to 5,000 miles.
A**R
i swear by the stuff!
i have a 2020 kia optima with around 130,000 miles on it and i swear by this. every time after an oil change and every x amount of miles and my gas mileage goes from 26mpg to 34. the price is good. is extremely easy to use. and i swear it works
M**2
Excellent for BMW’s
It works good. Great for fuel system maintenance every 15k. Excellent for older BMW’s.
J**Z
Que sea un artículo que cumpla con controles de calidad.
Hola Buenos días, en lo particular este producto es de buena calidad y si creo que cumple con las necesidades.
م**ا
ممتاز
انا فخور جدا بالمنتج اصلي ١٠٠%
D**I
Very fast delivery
Fast delivery and all good.
M**L
Excelente
funciona perfectamente, limpia y devuelve la potencia al motor.
H**G
Esperando que funcione
No se cuanto tarda en hacer efecto. Recomiendo que una vez que utilicen este producto, conduzcan en carretera o autopista.
Trustpilot
2 weeks ago
1 week ago