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.

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⚡ Unlock diesel power and efficiency all year round!

POWER UP YOUR DRIVE - Boosts horsepower with a 5-point cetane increase for sharper acceleration and torque.
ALL SEASON PERFORMANCE - Formulated to deliver peak results in both scorching heat and freezing cold.
START STRONG EVERY TIME - Ensures faster, easier starts no matter the weather—never get left in the cold.
UNIVERSAL COMPATIBILITY - Works seamlessly with all diesel engines, regardless of make, model, or year.
FUEL EFFICIENCY GAMECHANGER - Cuts fuel consumption by up to 9.6%, saving you money and trips to the pump.

Stanadyne's 4-pack of 8 oz Performance Formula diesel fuel additives enhances any diesel engine's performance by increasing cetane levels by up to 5 points, improving horsepower, torque, and acceleration. Independently tested to boost fuel economy by up to 9.6%, it also guarantees easier starts in all weather conditions. Compatible with all diesel engines, this year-round formula is a must-have for professionals seeking reliable power and efficiency.

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₱7363

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Manufacturer	Stanadyne
Brand	Stanadyne
Product Dimensions	33.02 x 27.94 x 5.08 cm; 0.28 g
Manufacturer reference	24349
Manufacturer Part Number	24349
Item Weight	0.28 g

Stanadyne4 Bottles of 38564 Performance Formula 8 oz Diesel Fuel Additive

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