What is the shelf life of this product?

They are sealed so expect a shelf life of a few years.

How many oz for 26 gal fuel tank

Each of these bottles treat 30 gallons. The approximate dosage is 1 ounce for every four gallons. If your fill up is about 16 gallons put in 4 ounces (1/2 bottle). If your fill up is 20 gallons put in 5 ounces. Basically take the gallons added to the tank and divide by 4. Round up or down to the nearest ounce.

Is this also an anti gel?

Yes, it includes Cold Weather Protection – improves diesel pour point up to 40°F (22°C), and cold filter plug point by up to 25°F (13°C), depending on base fuel

Should I had it to my empty tank, then fill it with fuel, or fill first, then dump in the bottle?

I pump a few gallons in if empty (which I don't recommend for fuel system health) them complete the fill up with diesel fuel.

4 Bottles Of Stanadyne 38564 Performance Formula 8 Oz Diesel

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

¥10929

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Description

⚙️ Unlock Diesel Power & Protection Like a Pro

ENGINE GUARDIAN - Lubricates and prevents corrosion, extending the life of injectors, pumps, and nozzles.
ECO SMART FORMULA - ULSD & B20 compatible, exhaust aftertreatment safe, and reduces harmful emissions for a cleaner ride.
POWER UP YOUR DRIVE - Boost horsepower and torque with advanced detergents that clean your fuel system for peak combustion.
COLD WEATHER WARRIOR - Protect your engine down to 40°F colder with anti-gel technology that keeps fuel flowing smoothly.
FUEL EFFICIENCY GAMECHANGER - Experience an average 4% MPG improvement—save money and reduce stops at the pump.

Stanadyne 38564 Performance Formula is a premium diesel fuel additive designed to restore horsepower, improve fuel economy by up to 4%, and protect your engine from cold weather and corrosion. Compatible with ultra-low sulfur diesel and biodiesel blends up to B20, it cleans fuel injectors, enhances combustion, and safeguards exhaust systems—making it a must-have for diesel drivers who demand peak performance and reliability.

Specifications

ASIN	B01BXECJ7S
Best Sellers Rank	#11,655 in Automotive ( See Top 100 in Automotive ) #23 in Diesel Additives
Brand	Stanadyne
Customer Reviews	4.6 4.6 out of 5 stars (398)
Date First Available	February 18, 2016
Is Discontinued By Manufacturer	No
Item Weight	0.01 ounces
Manufacturer	Stanadyne
Manufacturer Part Number	24349
Product Dimensions	13 x 11 x 2 inches

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

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 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.

¥10929

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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

4 Bottles of Stanadyne 38564 Performance Formula 8 oz Diesel Fuel Additive

Description

Specifications

Common Questions