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.

Stanadyne 38564 パフォーマンスフォーミュラ 8オンスディーゼル燃料添加剤 4本

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

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688.94 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⛽ Power, Protection, and Performance—Fuel Your Next Adventure!

SILENT STRENGTH - Cetane enhancement means easier starts, quieter rides, and reduced engine noise—drive with confidence.
POWER UP YOUR DRIVE - Cleans injection deposits to restore and increase horsepower for a smoother, stronger engine performance.
ECO SMART PERFORMANCE - Reduces smoke, emissions, and particles while breaking down water and improving filter efficiency—clean power for a cleaner planet.
ULTIMATE FUEL PROTECTION - Lubricant enhancers combat wear and tear, extending engine life and maintaining ultra-low sulfur diesel performance.
FUEL EFFICIENCY GAMECHANGER - Proven average 4% MPG boost, with peaks up to 9.6%—save more on every mile.

Stanadyne Performance Formula is a premium diesel fuel additive that cleans and lubricates the entire fuel system, increases cetane for better combustion and horsepower, improves fuel economy by up to 9.6%, reduces emissions and engine noise, and protects against fuel gelling. Compatible with B5 biodiesel and alcohol-free, it ensures your diesel engine runs cleaner, quieter, and more efficiently.

Specifications

ASIN	B01BXECJ7S
Brand	Stanadyne
Color	Braun
Date First Available	May 6, 2016
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	33 x 27.9 x 5.1 cm
Item Weight	0.28 g
Manufacturer	Stanadyne LLC
Manufacturer reference	24349
Product Dimensions	33.02 x 27.94 x 5.08 cm; 0.28 g
Special Features	Authorized Stanadyne Dealer: 1) Diamond Diesel & Turbo Service

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