“…There are more than 300 different species of trees which produce oil bearing seeds [2] only few of them being characterized for use in diesel engine. Which include Jatropha (Jatropha curcas) oil [3][4][5][6][7][8][9][10][11][12][13], Karanja or Honge (Pongamia pinnata/glabra) seed oil [4,9,[14][15][16][17][18][19][20], Polanga (Calophyllum inophyllum) seed oil [21,22], Rubber (Havea brasiliensis) seed oil [23][24][25][26], Mahua (Madhuca indica) seed oil [9,[27][28][29][30], Simarouba(Simarouba glauca) oil [29,30], Tobbaco (Nicotiana tabacum) seed oil [31], Bitter almond (Prunus dulcis) oil [32], Neem (Azadirochta indica A). seed oil [9,10,[33][34][35][36], Castor (Ricinus communis) seed oil [37,38], Okra (Hibiscus esculentus) seed oil [39], Kusum (Scheichera triguga) oil [40]<...>…”