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

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

Product ID: 68460321

Details

Brand
Chevron
Item Form
Liquid
Material Feature
Unscented
Scent
Unscented
Specific Uses For Product
Engine

⛽Cleans entire fuel system

⚙️Restores cetane boost for better combustion

❄️Improves cold starting performance

17920 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Drive cleaner, start stronger, perform smarter!

COLD START SAVIOR - Improves engine responsiveness and drivability even in the chilliest conditions—never miss a beat.
FUEL INJECTOR PROTECTION - Prevents sticking and failure with regular use, extending engine life and reliability.
UNIVERSAL DIESEL COMPATIBILITY - Works seamlessly with all diesel types including ultra-low sulfur, biodiesel, and blends—versatility you can trust.
ULTRA EFFECTIVE DEPOSIT CLEANER - Powerful patented formula cleans pre-existing and new diesel injector deposits for peak engine health.
CETANE BOOST FOR PEAK PERFORMANCE - Restores cetane levels to enhance combustion efficiency, reducing emissions and boosting power.

Chevron Techron D Concentrate is a 20 oz. ultra-high performance diesel fuel system cleaner designed to remove deposits, restore cetane boost, and improve cold starts. Compatible with all diesel fuels including biodiesel blends, it protects injectors from sticking and failure, enhancing engine responsiveness and reducing emissions. One bottle treats up to 35 gallons and is recommended every 3,000 miles or at oil changes.

Specifications

ASIN	B074JMSM96
Best Sellers Rank	#19,944 in Automotive ( See Top 100 in Automotive ) #49 in Diesel Additives
Brand Name	Chevron
Customer Reviews	4.7 4.7 out of 5 stars (376)
Global Trade Identification Number	00023968377199
Included Components	complete diesel fuel additive
Item Form	Liquid
Item Type Name	Fuel System Cleaner
Item Volume	20 fluid ounces
Manufacturer	Chevron
Material Features	Unscented
Model Number	266373272
Number of Items	1
Part Number	266373272
Scent	Unscented
Size	20 Fl Oz (Pack of 1)
Special Features	Concentrated
Specific Uses For Product	Engine
UPC	023968377199
Unit Count	20 Fluid Ounces
Warranty Description	Limited Warranty

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