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Stanadyne Performance Formula Diesel Fuel Additive - Pack of 8 Pint Bottles - Part # 385658

  • Based on 42 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Southwest Diesel & Electrical

Arrives Friday, Sep 12
Order within 17 hours and 35 minutes
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Features

  • Restores/Increase Horsepower detergents clean deposits in the injection system
  • Reduces Fuel Consumptiontests show an average of 4% improvement in MPG and gains up to 9.6%
  • Cetane Improver improves combustion resulting in better engine starting, running & reduced noise
  • Reduces Wear lubricity improvers restore lubricity to ultra low sulfur diesel fuels
  • Authorized Stanadyne Dealers:
    1) Diamond Diesel & Turbocharger Service.

Description

Advantages of using Performance Formula 1)Restores/Increase Horsepower – detergents clean deposits in the injection system resulting in improved combustion, better acceleration, power, and torque 2)Reduces Fuel Consumption – independent tests show an average of 4% improvement in MPG and gains up to 9.6% 3)Cetane Improver – improves combustion resulting in better engine starting, smooth running, and reduced engine noise 4)Meets all engine fuel system requirements -- will not harm exhaust aftertreatment systems 5)Reduces Emissions – reduces Smoke and Particulates 6)Cleans and Protects – detergents and deposit modifiers help protect injection pumps, injectors, nozzles, etc. 7)Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur and other low lubricity diesel fuels 8)Stabilizes Fuel - keeps fuel fresher and protects against formations of gums caused by oxidation 9)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 10)Corrosion Preventative – Corrosion inhibiters will protect the fuel system from rust and corrosion 11)Helps Remove Water – special demulsifiers cause tiny water droplets to come out of suspension/emulsion, so the filter/separator can more effectively remove water 12)Contains No Alcohol – avoids corrosion and accelerated wear 13)Specially Formulated -- for use with ultra low sulfur diesel fuel Can be used with Bio Diesel Fuel up to B20 (20% bio content approved ) – increased water separation shown in bio content up to B20 Authorized Stanadyne Dealers: 1) Diamond Diesel & Turbocharger Service 2) Southwest Diesel

Manufacturer: ‎Stanadyne


Brand: ‎Stanadyne


Item Weight: ‎1 pounds


Product Dimensions: ‎11 x 9 x 6 inches


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎38565-8P


OEM Part Number: ‎38565


Date First Available: November 30, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • performance
it helps keep fuel clean and improves performance / milage
Reviewed in the United States on October 4, 2022 by Brian Dailey

  • Very Fast Shipping from Seller!
Stanadyne is the BEST diesel fuel on the market! I've tried them all and Stanadyne is by far a superior product. It makes my 2004 Duramax run extremely well!
Reviewed in the United States on October 20, 2018 by J&2G'S

  • Truck Runs Quieter But No Improved Mileage
I read a lot of reviews stating that the mileage would increase, wasn't the case for me. My truck does run quieter and smoother and that is more important to me than adding a mile per gallon. Overall pleased.
Reviewed in the United States on January 3, 2019 by slocough

  • Short Order - Paid for 8 and Received 4
Ordered 8 and received two bags with 2ea for a total of 4ea so paid for 8 but got 4. Have sent message and no reply so leaving a message since seemingly no other recourse!
Reviewed in the United States on August 8, 2023 by Brainard Brauer

  • Good product
Have used it for years good product
Reviewed in the United States on June 7, 2023 by Dennis leese

  • It seems to work!
I'm no chemist or automotive expert, but this product seems to work on my '03 F250 6.0 diesel. Going beyond the gremlins that were born within this engine (Ford you should be ashamed) this product does what it claims. I find easier starts, less engine noise, slight increase in MPG and a bit of confidence that the fuel is being enhanced. Since I plan on driving this one into the ground, every bit of help is appreciated. BTW- if you are willing to invest about $5K into a 6.0 you can go a long ways past the initial problems. Approaching 200K and I have seen 20 mpg on a perfect day. Yes, really. ... show more
Reviewed in the United States on February 10, 2021 by D. Russell

  • Stanadyne saves fuel and makes my GMC run better.
Stanadyne saves fuel and makes my GMC run better.
Reviewed in the United States on March 3, 2019 by GoldenGuy22

  • This stuff is great!
It works like a champ and calmed my 7.3 down and added hp at the same time! Purrs like a kitten.
Reviewed in the United States on November 3, 2018 by Rye

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