How much oil can I put in my vehicle without mechanical risk?
Key words: HVP, HVB, vegetable oil fuel, engine, diesel,%, proportion, percentage, risk.
Generalities
All Diesel vehicles accept 30% vegetable oil mixed with conventional diesel, without engine modifications.
Indirect injection type vehicles fitted with a Bosh or Japanese injection pump (Diesel Kiki, Zexel, etc.) can go up to 50%, still without modifications.
Those equipped Lucas CAV Roto Diesel or Delphi, as well as direct injections should not exceed 30%.
To run with 100% vegetable oil, there are two types of adaptation:
- indirect injections fitted with Bosh or Japanese: supercharge the injectors to 185 bars, and in winter pre-wash pump and electric heater.
- direct injections: system of 2 tanks controlled by solenoid valves: this is the twin tank kit.
Summary Documents

1) How much vegetable oil for cars and small engines?
2) How much vegetable oil in an industrial engine: truck, tractor, generator?
More:
Download this document: roll in crude vegetable oil
Disclaimer
Econologie.com and Oliomobile.org disclaim any liability for the misuse or misuse of these documents.