My cousin gave me Techron Diesel and on its bottle neck is 19079. Is it made in 2019?

Doesn't really matter as this stuff is stable over long periods of time. FUEL is what you have to worry about aging out.

Does this also help clean out the exhaust system? such as the egr valve and dpf

No, it’s for fuel injectors and fuel lines clog cleaning

Emulsifier or demulsifier?

My best non professional answer is an emulsifier.

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Chevron Techron D Concentrate Diesel Fuel System Cleaner, 20 oz., Pack of 1

Chevron Techron D Concentrate Diesel Fuel System Cleaner, 20 oz., Pack of 1

Product ID: 389076945

Details

Brand
Chevron
Contains Liquid Contents
Yes
Item Form
Liquid
Item Volume
20 Fluid
Material Feature
Unscented
Net Quantity
591.47

⛽Cleans entire fuel system

⚙️Restores cetane boost & combustion

🛠️Prevents injector sticking & failure

AR$168272

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛢️ Keep your diesel running like new — don’t let deposits slow you down!

ROUTINE PROTECTION FORMULA - Use every 3,000 miles to prevent injector sticking and costly repairs.
BOOSTS COMBUSTION EFFICIENCY - Restores cetane levels to improve fuel burn, reduce emissions, and enhance cold starts.
ENGINE RESPONSIVENESS REVIVED - Experience smoother acceleration and quieter operation with cleaner injectors.
UNIVERSAL DIESEL COMPATIBILITY - Safe for all diesel types including ultra-low sulfur, biodiesel, and blends.
ULTRA EFFECTIVE DEPOSIT CLEANER - Powerful PEA formula targets and dissolves stubborn diesel deposits for peak engine health.

Chevron Techron D Concentrate is a 20 oz. ultra-high performance diesel fuel system cleaner formulated with patented PEA technology. It effectively cleans deposits throughout the fuel system, restores cetane boost for improved combustion, and prevents injector sticking. Compatible with all diesel fuels including biodiesel blends, it treats up to 35 gallons per bottle and is recommended every 3,000 miles for optimal engine performance and longevity.

Specifications

ASIN	B074JMSM96
Best Sellers Rank	#83,530 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #85 in Diesel Additives
Brand	Chevron
Brand Name	Chevron
Contains Liquid Contents?	Yes
Customer Reviews	4.8 out of 5 stars 271 Reviews
Global Trade Identification Number	00023968377199
Included Components	20 oz Bottle Techron D Concentrate
Item Form	Liquid
Item Type Name	Techron D Concentrate Diesel Fuel System Cleaner, 20 oz
Item Volume	20 Fluid Ounces
Manufacturer	Techron
Material Feature	Unscented
Material Features	Unscented
Model Number	266373272
Number of Items	1
Part Number	266373272
Scent	Unscented
Size	591.47 ml (Pack of 1)
Special Features	Concentrated
Specific Uses For Product	Engine
UPC	023968377199
Unit Count	591.47 Milliliters

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