How do I ensure it mixes well when dosing an already-full 285-gallon farm diesel tank?

Ideally, you can add the product prior to receiving a delivery to provide effective mixing. However, if treating a full tank go ahead and add the product and agitate with any available method. ie. circulation, stirring, etc. Biobor JF is dual-phase soluble in both fuel and water, so it will begin to migrate through out the tank on its own, it will just be a slower process. It is better to go ahead and treat the tank and let it mix in time, versus no treatment at all. Biobor JF provides lasting protection of stored fuel, and will also protect the fuel as it is delivered to the equipment being used for complete coverage.

I have a 400 gallon tank. For maintence dose: if i fill up (add) with 200 gallons, do I dose for 200 gallons or 400 gallons?

If the fuel that is already in the tank is treated with Biobor JF then you would only dose for the 200 gallons that you are adding. If the fuel currently in the tank is untreated with Biobor then you would dose for the entire 400 gallons. I hope that this answers your question.

My RV already has a full tank of fuel, if I add this product and then drive will driving mix it into the fuel?

Ideally, you should add Biobor in the the tank before you fill up. Thats the best mixing in the fuel tank for this product or any additive for that matter. if you have a full tank you can add biobor and drive around to mix it. It will also get into the fuel lines and injectors by running the engine. Should be fine. Even if i add biobor before a fill up I still run the engines to get it in the full lines and injectors. I have been using Biobor on every fill up and winter storage since 1998 religiously in my boat and i have Never had anything grow in my tank. Never a problem. Its an ounce of prevention.

How do I ensure it mixes well when dosing an already-full 285-gallon farm diesel tank?

As a rule always put biobor in before a fill up. If not try your best to agitate the tank especially if its going to sit for a while.

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JF Diesel Fuel Additive: Highly Effective Fuel Biocide Supplement, Prevents Corrosion of Fuel Tanks, Increases Lubricity, Dual Phase Chemistry | 16 Ounce, (BB16EZ01US)

JF Diesel Fuel Additive: Highly Effective Fuel Biocide Supplement, Prevents Corrosion of Fuel Tanks, Increases Lubricity, Dual Phase Chemistry | 16 Ounce, (BB16EZ01US)

Product ID: 15163468

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Details

Brand
BIOBOR
Product Grade
Performance
Outer Material
Metal
Vehicle Service Type
Bus Truck
Item Weight
1.2 Pounds

⛽Increases fuel lubricity & extends filter life

🦠Kills & prevents microbial growth

⚙️Dual phase chemistry for full-spectrum protection

Description

🛢️ Keep your engine running cleaner, longer — because your fuel deserves the best!

DUAL PHASE POWER - Targets both water and fuel layers for unbeatable corrosion and microbe control.
FUEL FILTER LONGEVITY - Prevents sludge buildup, extending filter life and reducing maintenance downtime.
ENHANCED LUBRICITY BOOST - Improves fuel lubricity to protect injectors and pumps from premature wear.
OEM APPROVED PERFORMANCE - Meets and exceeds ASTM standards, ensuring trusted, industry-grade fuel protection.
MICROBIAL DEFENSE MASTERY - Eliminates bacteria & fungi to safeguard your fuel system from costly contamination.

BIOBOR JF Diesel Fuel Additive is a 16 oz. high-performance biocide supplement designed to kill and prevent microbial growth in diesel and aviation fuels. Featuring dual phase chemistry, it protects both water and fuel layers from contamination and corrosion, extends fuel filter life by preventing sludge buildup, and increases fuel lubricity to reduce wear on injectors and pumps. OEM-approved and ASTM-certified, it ensures superior fuel system maintenance for trucks, buses, and other diesel vehicles.

Specifications

Brand	BIOBOR
Product Grade	Performance Part
Outer Material	Metal
Vehicle Service Type	Bus, Truck
Item Weight	1.2 Pounds
Style	16 oz
Global Trade Identification Number	00694481000309
Manufacturer	Hammonds Fuel Additives, Inc.
Automotive Fit Type	Universal Fit
UPC	694481000309 840194117920
Model	BIOBOR JF Diesel Fuel Additive, 16 oz., (BB16EZ01US)
Item Weight	1.2 pounds
Product Dimensions	4.25 x 2 x 7.87 inches
Item model number	BB16EZ01US
Is Discontinued By Manufacturer	No
Manufacturer Part Number	BB16EZ01US

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