REV X Ultimate Diesel Fuel Additive (4 Pack) - Boosts Cetane, Fuel Economy, Cleans and Lubricates Fuel Injectors - 8 fl. oz. (Treats 100 Gallons)
Condition: New
$27.80
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Availability:
In Stock.
Arrives
Friday, Nov 20
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At a glance
- Condition
- New
- Number of Items
- 4
- Model
- ULT0801
- Dimensions
- 2.25 x 2.25 x 6.75 in
- Weight
- 2 lb
- Voltage
- 12 volts
Features 5
- Deep cleans injectors, turbos, tanks, pumps, lines, and valves for peak performance.
- Maximize Fuel Efficiency: Boosts cetane up to 12 points to unlock lost horsepower and MPG.
- Run Cooler, Cleaner, Longer: It can help reduce EGT temperatures, exhaust gas temperatures, emissions, and toxic smoke.
- Protect Your Investment: Adds vital lubricity while guarding against rust and corrosion in modern and classic engines.
- Keep Fuel Fresh & Trouble-Free: Stabilizes fuel for 12 months, disperses water, and neutralizes BioFuel sediment.
Description
Ultimate replenishes or replaces vital lubricity and cleaning properties lost when making ULSD (ultra-low sulfur diesel) fuel. It includes a deep cleaning detergent to keep your fuel system & injectors clean and a stabilizer to keep your diesel fresh for up to one year. With an increase in cetane, up to 12 points, it restores lost performance and fuel economy.
Specs 9
| Manufacturer | Rev-X Products, Inc. |
|---|---|
| Brand | REV X |
| Model | REV-X Ultimate |
| Item Weight | 2 pounds |
| Product Dimensions | 2.25 x 2.25 x 6.75 inches |
| Item model number | ULT0801 |
| Manufacturer Part Number | ULT0804 |
| OEM Part Number | ULT0801 |
| Voltage | 12 volts |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 20
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Highly recommend
Number of Items: 4
I was informed about this product from 805Diesel when I asked about my concerns with BioDiesel in my engine. Sometimes in traveling you get stuck having to use it. I have a 2006 Dodge Ram 2500 Mega Cab, Heavy Duty Package with a Cummins Disel Engine and was told my engine actually handles the sludge BioDiesel creates better than the newer engines. They suggested using this product about 3 or 4 times a year to help performance. I saw an immediate improvement in MPG and performance. Less smoke on fast acceleration and runs smoother. I recommend this product to save you money down the road in Valve repairs.
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Reviewed in the United States on June 23, 2026 by Terry S.
Good product
Number of Items: 4
I put a bottle in every fill up, better mileage and the overall engine performance is noticeably better.
Reviewed in the United States on October 9, 2020 by james francisco
A “Must” Diesel Fuel Additive For Dependability!
Number of Items: 4
I’ve been using “Rev-X” products for decades, their Ultimate Diesel Fuel Additive is difficult to beat. Added mpg, smoother engine operation, much cleaner emissions, engine oil stays cleaner. (Combined with occasional MMO original, added to the fuel) the 170,000 miles on my 2013 Silverado Duramax/Allison combo is performing exceptionally well (Amsoil lubricants are the “constant” glue keeping my truck operating 70,000+ miles per year. Not a drop of oil is necessary between changes (7,000 miles) the Fuel is the first line of defense, some mornings in the Black Hills of Wyoming drop to-20, to -30 (I have a heated silicon mat “glued” to the bottom of my oil pans. All Rev-X products are top notch and very reliable to deliver their best functional purpose.
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Reviewed in the United States on March 21, 2026 by Daniel Smith