80% ethanol mixed with 20% diesel

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Discussion Overview

The discussion revolves around the feasibility and implications of mixing 80% ethanol with 20% diesel as a fuel alternative, particularly in relation to performance, fuel economy, and potential engine damage. The context includes both theoretical considerations and practical experimentation with the fuel mixture.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant questions whether the mixture would perform similarly to 95 octane gasoline and raises concerns about possible engine damage.
  • Another participant warns that unless the vehicle is a flex fuel vehicle, the elastomers in the fuel system could be damaged, and corrosion of fuel lines may occur.
  • Some participants suggest that using this mixture could potentially ruin both spark ignition (SI) and compression ignition (CI) engines.
  • A participant shares their experimental experience with a modified mixture (70% E75, 20% diesel, 10% 95 octane gasoline), noting initial success but expressing uncertainty about long-term performance and fuel economy.

Areas of Agreement / Disagreement

Participants express concerns about the potential for engine damage and performance issues, but there is no consensus on the overall viability of the fuel mixture or its effects on engine longevity.

Contextual Notes

Limitations include uncertainty regarding the specific impacts on different engine types and the lack of detailed analysis on fuel economy and performance metrics from the experimental trials.

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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
 
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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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