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.

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Diesel Performance Formula 38566, 64 Ounce

Product ID: 572485623

Details

Brand
Stanadyne
Liquid volume
64 Fluid
Package information
Bottle
SAE J300 Viscosity Grade
5W-30
Vehicle service type
Bus Truck

🔥Meets Cummins L10 Superior Cleanliness Test

⚙️OEM-approved multi-function additive

🛢️64 oz premium all-season formula

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Description

🛠️ Power your diesel, dominate the road—because your engine deserves the best.

ALL SEASON POWER - Optimized for year-round use, ensuring peak diesel performance anytime.
OEM BACKED PERFORMANCE - Trusted by GM, Ford, Deere & Navistar for unmatched reliability.
FUEL INJECTION EXPERTISE - Formulated by a leading fuel injection equipment manufacturer for precision results.
PROVEN CLEANLINESS BOOST - Meets rigorous Cummins L10 standards to keep your engine spotless.
UNIVERSAL DIESEL SOLUTION - One bottle tackles virtually every diesel fuel problem—no more guesswork.

Stanadyne Diesel Performance Formula 38566 is a 64-ounce premium, all-season diesel fuel additive designed to solve virtually any diesel fuel-related issue. Approved by major OEMs like GM, Ford, Deere, and Navistar, it meets the stringent Cummins L10 Superior Cleanliness Test and is crafted by a leading fuel injection equipment manufacturer to ensure optimal engine performance and longevity.

Specifications

ASIN	B000M5QPSY
Automotive Fit Type	Universal Fit
Best Sellers Rank	56,297 in Automotive ( See Top 100 in Automotive ) 312 in Fuel Systems
Brand	Stanadyne
Brand Name	Stanadyne
Compatible with Vehicle Type	Bus, Truck
Container Type	Bottle
Customer Reviews	5.0 out of 5 stars 2 Reviews
Liquid Volume	64 Fluid Ounces
Liquid volume	64 Fluid Ounces
Manufacturer	Stanadyne
Manufacturer Part Number	38566
Model Number	5
Number of Packs	1
Package information	Bottle
SAE J300 Viscosity Grade	5W-30
Size	64oz
UPC	753167924442 026508385661
Unit Count	1892.7 millilitre
Vehicle service type	Bus, Truck

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₩308144

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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