does it contain antigel

The performance does have a antigel the winter formula is for extreme cold weather

Is this compatable with def (diesel exhaust fluid) engines. i'm in ca and have a 2011 duromax.

Like other popular additives on the market, the use does not have any bearing on the use of DEF as the DEF is part of the "after combustion stage" of any modern pick-up truck diesel engine. Stanadyne additive is one of the better additives with regards to helping to keep the injectors lubricated during use which also helps to keep them clean and therefore greatly aides in cooling the injectors which are the 3 components of any good diesel fuel; Fuel for combustian-Lubrication of pumps & injectors-Cooling of Injectors, therefore, longer life expectancy! The idea of increasing the cetane rating might be true for some of the additives one can buy, but that is really not the reason to buy any diesel additive! DEF is injected after the combustion process and only used to help dissolve and burn out any particulate matter being emitted in the exhaust.

How often do you use it? Is every fill up ok?

Yes I use 6oz every fill up it is great for the engine and increases power

What is the dosing ratio of additive to diesel fuel?

.26 ounces per gallon of diesel.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Stanadyne Diesel Performance Formula 38566, 64 Ounce

Stanadyne Diesel Performance Formula 38566, 64 Ounce

Product ID: 6914051

Details

Brand
Stanadyne
Liquid Volume
64 Fluid
Package Information
Can Jug
UPC
753167924442
Vehicle Service Type
All Diesel On

⛽Treats 240 gallons diesel

⚙️Boosts horsepower & torque

🛡️OEM-approved engine protection

918 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

Secure transaction

Description

🛢️ Power up your diesel, dominate the road—don’t get left behind!

ALL SEASON PROTECTION - Formulated to tackle diesel fuel problems year-round, ensuring consistent engine health.
OEM BACKED RELIABILITY - Trusted and approved by industry giants like GM, Ford, Deere & Navistar.
PROVEN PERFORMANCE BOOST - Enhances fuel economy while increasing horsepower and torque for peak engine power.
HIGH TREATMENT EFFICIENCY - One 64oz jug treats up to 240 gallons of diesel fuel—maximize value and performance.
UNIVERSAL DIESEL ENGINE COMPATIBILITY - Works seamlessly with all diesel engines—on-road, off-road, and marine.

Stanadyne Diesel Performance Formula 38566 is a premium, all-season diesel fuel additive designed to restore engine performance by improving fuel economy, horsepower, and torque. Approved by major OEMs and proven in independent tests, this 64-ounce formula treats up to 240 gallons of diesel fuel, providing universal compatibility across on-road, off-road, and marine diesel engines.

Specifications

ASIN	B000M5QPSY
Automotive Fit Type	Universal Fit
Best Sellers Rank	#12,083 in Automotive ( See Top 100 in Automotive ) #21 in Diesel Additives
Brand	Stanadyne
Brand Name	Stanadyne
Compatible with Vehicle Type	All Diesel Engines: On Road - Off Road - Marine
Container Type	Can, Jug
Customer Reviews	4.8 out of 5 stars 762 Reviews
Liquid Volume	64 Fluid Ounces
Manufacturer	Stanadyne
Manufacturer Part Number	38566
Model Number	5
Package Information	Can, Jug
Part Interchange Info	38566
Size	64oz
UPC	753167924442 026508385661
Unit Count	64.0 Fluid Ounces
Vehicle Service Type	All Diesel Engines: On Road - Off Road - Marine

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

918 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews