Karanja, Neem and Jatropha biodiesel were tested for oxidation stability.
Jatropha biodiesel showed higher oxidation stability than Karanja & Neem.
1,2,3 Tri-hydroxy benzene and 3,4,5-tri hydroxy benzoic acid were effective.
2,6-Di-tert butyl-4-methyl phenol, 2-tert butyl-4-methoxy phenol were less effective.
2-Tert butyl hydroquinone was least effective.