Chevron 67740-CASE Techron Concentrate Plus Fuel System Cleaner - 12 oz. (Pack of 6)

I bought a 72,000 mile used Camry, 2.4L classic engine, with good service as shown on Carfax. I live in California so our cheapest gas has twice the Federal required level of detergent in it. Top Tier brands (Google search for Top Tier Gasoline) has 4 times the Federal required level of detergent and is available country wide.So there are 3 levels of detergency: Federal; California minimum; Top Tier branded gasoline (ARCO, Shell, Chevron, 76, most big brands).It’s impossible to know what kind of gas went into my recent used purchase. I’m assuming the cheapest, which - except for Costco - means California minimum, twice Federal minimum though.My new used car ran fine. Maybe a little rougher at idle than it does now, 1200 miles later. Since I got it, I’ve been running a 12 ounce bottle of Techron at each fill up. Tank holds 14 gallons but my fills have all been between 9-10 gallons.I have a certain consistent route about 40 miles outbound and inbound, free flowing freeway traffic. Very consistent route to freeway. Very consistent morning temperatures during warmup.I have seen my route change from 28.5 mpg, as indicated on the dash computer, to 30.3 mpg.I am finished with my “cleaning cycle” and will henceforth only purchase Top Tier fuel, which. should be sufficient (the car makers validate their clean air systems on Top Tier fuel) and add a bottle of Techron at each 1000 mile odometer point (on my cars purchased new I don’t add Top Tier ever). I am hoping to gradually and gentle clean up any valve and piston top deposits.You’d think by now, the main ingredient in Techron would be available in a $5 knockoff. Sadly the competition uses old snake oil ingredients from the ‘50’s and ‘60’s. Techron is the real deal.

I’ve been using the Chevron Techron Concentrate Plus Fuel System Cleaner for a while now, and I’m honestly impressed! My car was starting to have rough idling and sluggish acceleration, but after using this cleaner, it runs like new. The fuel system cleaner helps clean the injectors, combustion chambers, and intake valves, which noticeably improved my engine’s performance. It’s easy to use, just pour it into the gas tank, and you’re good to go. I’ve noticed smoother driving and even a slight improvement in fuel efficiency. Highly recommend this for anyone looking to boost their engine’s health!

Great Price compared to store Product, for best results Run tank to almost empty, pour entire bottle in and add NO MORE than 8 gals max, 6 gals even better, and then drive hwy speed at least 1hr. Most times you will need to do this 2x. Just a fact, Incredible research on the Internet supports what I say. Still the best product right now.

This stuff actually works, showing an immediate increase in fuel economy in both of the cars we put it in.That said, ALL 6 containers came with loose lids and foil seals that weren't attached. Half the shipping box was thoroughly saturated. I can understand one, but all 6 bottles? I'd give it 3.5 stars purely because of the leakage.

Put in 2 cars and noticed improved mpg and pick up. Put 2 bottles in truck and 70 miles later check engine light turned off. Light was for lean fuel both banks. This stuff works!

If you must buy the Cheap Charlie gasoline, add Techron at the recommended rate to keep the combustion chambers clean, especially on direct injection and turbo charged engines. It really helps to stop the build up on the valve stems and seats along with the deposits in the combustion chambers.

This fuel system cleaner is fantastic! After just one treatment, my car runs smoother with improved acceleration and fuel efficiency. It effectively removes deposits and reduces engine knocking. Easy to use—just pour into the tank before filling up. Highly recommend for maintaining engine performance. A must-have for any vehicle owner!

Excellent fuel system cleaner! After using Chevron Techron Concentrate Plus, my car runs smoother with improved acceleration and fuel efficiency. It effectively reduces engine knocking and cleans injectors. Easy to use—just pour into the tank before refueling. Highly recommend for regular maintenance. Works better than other brands I’ve tried. Five stars!