Oxidation Stability
Fuel aging and oxidation can lead to high acid
number, high viscosity and formation of sediments.
The higher the level of unsaturation, the more likely
that the biodiesel will oxidize.
Heat and sunlight will accelerate oxidation process.
Metals such as copper, brass, bronze, lead, tin, and
zinc will accelerate the degradation process.
Keeping oxygen from the biodiesel reduces or
eliminates fuel oxidation.