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USD 9.49
Part #: RL70802

Red Line 70802 85 Plus Diesel Fuel Additive

For All Diesel Engines, 12 Oz. Bottle (Treats 100 Gallons)
Part #: RL70802
★★★★★ ★★★★★ 2 Reviews
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Designed for use in all diesel engines, Red Line 70802 85 Plus Diesel Fuel Additive contains extremely powerful lubricants, detergents, seal conditioners, fuel stabilizers and rust preventatives, but without smoke suppressant. Red Line 85 Plus contains additional cetane improvers which boost the fuel 5-9 cetane numbers and additional lubricants which reduce wear in low sulfur fuel by 75%. This improvement in lubricity and cetane will reduce detonation, assist starting, help reduce smoking, help prevent fuel system wear and leakage and can provide 5% additional power and efficiency.

  • 12 Oz. Bottle
  • Treats Up To 100 Gallons
  • Contains Cetane Booster
  • Lubricates Fuel System Components
  • High-Temp Detergents
  • Improved Efficiency


  • MFG. Number 70802
  • Manufacturer Name Red Line
  • Shipping Weight 1.00 lb.
  • Shipping Length 10 in.
  • Shipping Width 12 in.
  • Shipping Height 10 in.
  • Fuel Type Diesel
  • UPC 083522708029
  • Prop 65 WARNING: Cancer & Reproductive Harm -


Currently Viewing Reviews with a rating of 5. Click here to reset.
★★★★★ ★★★★★
5.0/5 Stars out of 2 Reviews
Won't Drive Without It
(Atlanta, GA) | February 4th, 2020
I drive a 1985 300 TD Mercedes. It has just over 411,000 on it. It's only the 3rd car I've ever owned and I am 56 years old. My first mechanic told me about this product and I've used it ever since and won't be without it. I use half a bottle every 2 weeks. Back in the late 90's, before you could find any and every thing on the internet , I had a hard time finding Redline, so I used something the mechanic at the time turned me to, and my I could tell my car wasn't running nearly as well. A few years later I finally found the Redline, and I've not run out since. Thanks for bringing us this product.
2003 duramax bad injectors
(Warrenton, MO) | October 8th, 2012
I had two injectors going bad and decided to try this before I replaced them. I added it to my fuel and drove 300 miles back home and by the time I made it home my truck had stopped smoking. I have a 2003 Silverado 2500HD with a Duramax.

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Questions and Answers

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Most Popular Questions

Will red line diesel treatment without harm a MB Diesel 2.1 liter engine OM 651 in a 2013 GLK 250 ? Also where should this additive be poured Fuel Tank? or different location (s) in the fuel system?
View Staff Answer 
Red Line 85 5Plus Diesel Fuel Additive is designed for use in all diesel engines and compensates for low-sulfur fuels. The additive should be poured directly into the fuel tank.
XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
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  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.