<br>There are at least 3 methods to run a diesel engine on [biofuel](https://www.intelligentinvestor.com.au/shares/asx-mbt/mission-newenergy-limited/share-price) using veggie oils, [animal fats](https://www.proactiveinvestors.co.uk/companies/news/159346/mission-newenergy-delivers-maiden-biodiesel-production-to-global-oil-major-24476.html) or both. All 3 are used with both fresh and used oils.<br>
<br>1. Use the oil just as it is-- normally called SVO fuel ([straight](https://www.proactiveinvestors.co.uk/companies/news/159346/mission-newenergy-delivers-maiden-biodiesel-production-to-global-oil-major-24476.html) grease)