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.

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Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz

Product ID: 258068038

Details

Brand
Chevron
Item form
Liquid
Material features
Concentrated
Scent
Unscented
Specific uses for product
Gasoline Fuel

⚡Restores engine power & performance

⛽Cleans entire fuel system

🛣️Works in one tankful while driving

Description

⛽ Power up your drive with every tank—because your engine deserves the best!

KNOCK PING REDUCTION - Minimizes engine knock, ping, and cold start issues for smoother rides.
DRIVE CLEAN IN ONE GO - Cleans effectively during your regular drive—no extra steps needed.
COMPLETE FUEL SYSTEM DETOX - Eliminates deposits from injectors, carburetors, valves & combustion chambers for peak efficiency.
ROUTINE MAINTENANCE ESSENTIAL - Use every 3,000 miles to maintain engine responsiveness and prolong vehicle life.
OPTIMIZED FOR HIGH OCTANE FUEL - Maximize results with 95+ octane fuel for enhanced mileage and power.

Chevron Techron Concentrate Plus is a concentrated, chlorine-free liquid fuel system cleaner designed to remove stubborn deposits from fuel injectors, carburetors, valves, and combustion chambers. Delivered in a 20 oz bottle, it works effectively in just one tankful while driving, reducing engine knock, ping, and cold start problems. Recommended for use every 3,000 miles with high-octane fuel, it restores lost power and improves fuel efficiency, making it a top-rated choice (#6 in Automotive Fuel System Cleaners) with over 8,000 positive reviews.

Specifications

ASIN	B00092893E
Best Sellers Rank	#570 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Fuel System Cleaners
Brand Name	Chevron
Contains Liquid Contents?	Yes
Customer Reviews	4.6 4.6 out of 5 stars (8,346)
Global Trade Identification Number	06007795111540
Item Form	Liquid
Item Volume	20 Fluid Ounces
Item Weight	1 Pounds
Manufacturer	Chevron
Material Features	Concentrated
Material Type Free	Chlorine Free
Model Number	65740
Number of Items	1
Part Number	65740
Scent	Unscented
Special Features	Concentrated
Specific Uses For Product	Gasoline Engine Fuel Tanks
UPC	023968657406
Unit Count	20 Milliliters

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