We use K100 in our diesel motorhome, I get the 32oz bottles and follow the directions on the label. The bottle instructions say it treats 250 gallons (I think). I divide 32 oz by 250 gallons that gives me .123 oz per gallon pumped. I multiply the gallons pumped by .123 to determine how many oz to add to the tank. I am generally pumping 90 to 110 gallons per filllup. I use a plastic bottle that has an oz scale up the side and a long neck funnel to add the K100.

What is the mix ratio? Oz's of k-100 to gal of diesel?

1oz per 8 Gallons of Diesel in Warm Weather1oz per 5 Gallons of Diesel in Cold WeatherThis is close to the recommended mix... I myself just add 1oz per 5 Gallons in both climates and it is working fine for me...

Hello, can I add frontier 2004 diesel? how much per full tank?

1 oz, per 7.5 gallons summer use. 2 oz per 7.5 gallons of winter use

how much per gallon do I need to use..,i have 80 gallons of diesel

I use about 1.5 ozs. per 5 gallons. So for 80 gallons of fuel works out to about 16 ozs. Ratios are on the bottle. I add about 2.5 ozs. per 5 gallons for winter use.

K100 Additive Diesel Treat Stbl Qt | Desertcart South Africa

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Description

🛠️ Keep your diesel flawless and future-proofed with K100!

COST SAVING MAINTENANCE - Reduces filter replacements and engine wear, saving you time and money.
GUM VARNISH DISSOLVER - Keeps your fuel system clean and clog-free for peak operation.
LONG TERM FUEL STABILITY - Preserves fuel quality during storage, so you’re always ready to roll.
ENGINE EFFICIENCY ELEVATED - Enhances combustion for smoother, more powerful performance.
WATER FREE FUEL WORRY FREE DRIVE - Eradicates water and prevents microbial growth to protect your engine.

K100 Diesel Treat is a premium fuel additive designed to eliminate water contamination and microbial growth, dissolve harmful deposits, and stabilize diesel fuel for long-term storage. Trusted by professionals, it enhances engine efficiency and reduces maintenance costs, ensuring your vehicle runs clean, smooth, and reliably.

Reviews

A**C

Excellent product, super happy with it

This is a large bottle that will last quite a few years... only a few cap full at each fill up and no more worries about water in the fuel. Plus saves money on filters you won't have to change!

3.11.2022

J**D

Love this product

Great product, have been using for years.

21.06.2026

T**Y

A+ Just Works, very great product

K100 for gasoline and now for diesel too. I'm such a believer in this product!!! It works, keeps my vehicles and tractor working flawlessly and running clean and smooth.

7.12.2025

V**O

Restores lubrication to ultra low sulphur diesel

Price is below that of automotive stores. Quick shipping too. This product is supposed to restore lubricant to low sulphur diesel, and remove water and save the life of main fuel pump

20.04.2026

E**D

Heating oil aid!

We use in our outside heating oil tank. In the Northeast, during the extreme cold months (DEC-JAN-FEB) we are at risk of oil congealing. This product has enabled us to use # 2 heating oil rather than K-1 fuel which can be $2-3more per gallon. We have experienced no congealing, it disperses any condensation and burns cleanly. Our burner tech was amazed at the cleanliness of the burner filter and oil nozzle. Well worth the cost verses paying extra for the K-1 or extremely costly service tech bills. Works for us!

29.03.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

R1278

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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ASIN	B008D6IBTA
Brand	K-100
Customer Reviews	4.7 4.7 out of 5 stars (160)
Date First Available	27 March 2013
Exterior	Painted
Item Weight	0.28 g
Item model number	501
Manufacturer	K100
Manufacturer Part Number	501
Model	K100 501
Product Dimensions	8.38 x 8.38 x 27.43 cm; 0.28 g

K100 Additive,Diesel Treat Stbl Qt

Description

Specifications

Reviews

Common Questions