80% ethanol mixed with 20% diesel

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SUMMARY

The discussion centers on the performance and potential risks of mixing 80% ethanol with 20% diesel in a gasoline engine. Participants highlight that unless the vehicle is a flex fuel model, the elastomers in the fuel system are at risk of damage, and corrosion of fuel lines may occur. Testing a mixture of 70% E75, 20% diesel, and 10% 95 octane gasoline resulted in initial success, but long-term viability remains uncertain due to potential engine damage.

PREREQUISITES
  • Understanding of fuel types: ethanol, diesel, and gasoline
  • Knowledge of flex fuel vehicle capabilities
  • Familiarity with engine components and fuel system materials
  • Basic principles of internal combustion engines (SI and CI)
NEXT STEPS
  • Research the effects of ethanol on fuel system elastomers
  • Learn about flex fuel vehicle specifications and compatibility
  • Investigate the impact of diesel fuel in gasoline engines
  • Study engine performance metrics and fuel economy calculations
USEFUL FOR

Automotive engineers, mechanics, and enthusiasts interested in alternative fuel mixtures and their effects on engine performance and longevity.

Low-Q
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Would this mixdure be equivalent in performance and fuel economy as 95 octane gasoline? Any possible damages to the engine if I try this mixdure?

Br. Vidar
 
Chemistry news on Phys.org
Unless the car is a flex fuel vehicle the elastomers in the fuel system could be damaged. In addition corrosion of the fuel lines can occur. As far as the diesel fuel goes, I have no idea how it would work in a gas engine.
 
Sounds like a good way to ruin both SI and CI engines.
 
SteamKing said:
Sounds like a good way to ruin both SI and CI engines.

The car is 98% scrap already. Just wanted to test it. So I gave it a mild start. 70% E75, 20% diesel, 10% 95 oktane gasoline. The engine ran like a kenguru - it did for the first 50 km, then it runs smooth. Can't tell what the milage is yet until the tank is empty - if the engine last for that long...

Vidar
 

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