Is there any reason why after using this that I should also use Chevron's fuel injector cleaner or does this do the same thing?

The fuel injector cleaner is for use every 1,000 miles after the initial use of the complete system cleaner when doing an oil change. My Kia recommends using Chevron system cleaner at every oil change, and I'm also going to put the fuel injector cleaner every 1,000 miles after the oil change. You don't put, both in at the same time.

I found an old unopened bottle of the original concentrate, not the Plus. Probably 10 years old. Is it still OK to use.

Yes, its fine to use. The ingredients don't go bad for maybe 20 plus years or more

it's a real pain to open Techron bottle's seal. do you guys have any tips on opening it easily?

I punch the seal with the end of a closed pocket knife. Makes a large enough opening. You don’t need to peel off the foil seal.

How is this different than the older techron "fuel system cleaner," that also is supposed to clean injectors?

pro guard is not as concentrated as the full strenth black bottle that i have used for years at my repair, with the new fuel injection systems that have come out the last few years,They have carbon built up problems on the valves.I would only use the full strench in my cars every oil services

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🚗 Keep your ride running like new—because every mile counts!

POWER REBOOT - Eradicates gum & varnish to revive engine performance
CORROSION SHIELD - Advanced inhibitors guard metal parts from rust and damage
HIGH MILEAGE HERO - Specifically formulated for vehicles over 75,000 miles to maintain peak condition
ETHANOL COMPATIBLE - Safe and effective with modern ethanol blends like E10 and E85
FUEL EFFICIENCY MAXIMIZER - Cleans fuel system to unlock better mileage and energy use

Chevron’s Techron High Mileage Fuel System Cleaner is a premium 6-pack solution designed to clean and protect fuel systems in vehicles with over 75,000 miles. It removes deposits that sap power and efficiency, shields metal components from corrosion, and is fully compatible with ethanol-blended fuels. Ideal for gasoline engines including hybrids, it ensures sustained engine performance and fuel economy without harming catalytic converters or oxygen sensors.

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Manufacturer	Chevron
Brand	Chevron
Model	Techron High Mileage Fuel System Cleaner
Product Dimensions	8.02 x 6.77 x 22.6 cm; 2.38 kg
Item model number	266711163-6PK
Item Dimensions L x W x H	8 x 6.8 x 22.6 cm
Item Weight	2.38 Kilograms

TECHRON 266711163-6PK High Mileage Fuel System Cleaner 6 Pack

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