Waste vegetable oil (WVO) has many similar properties to diesel fuel. What are the similar properties?

Every website I google just briefly said the same thing that Waste Vegetable Oil has the same properties to diesel fuel but they don't give more details.Waste vegetable oil (WVO) has many similar properties to diesel fuel. What are the similar properties?
when compressed, it ignites at about the same compression / temperature as diesel fuel.





in an engine, you want the spark to ignite the fuel mixture at the point where the air/fuel mixture is about to explode. (ie where it would spontaneously ignite anyway.


that's why you hear car engines with higher compression ratios knock when they use 87 octane gasoline.


87 octane spontaneously ignites at a lower temperature.





the same is true of diesel engines.


they're designed so that diesel fuel ignites at the maximum compression of the engine.


it's just a fortunate coincidence that vegetable oil ignites at the same point.





the power ratio is not the same because diesel fuel is just carbon and hydrogen, whereas vegetable oil also contains some oxygen.


on the other hand waste veg-oil is essentially free.Waste vegetable oil (WVO) has many similar properties to diesel fuel. What are the similar properties?
waste vegetable oil is not free, it's quite expensive when you add in the cost of converting, the cost of filtering, the cost of also maintaining your normal system, the cost of not being able to use it because it freezes to an unmovable jello, the cost of the taxes you MUST pay or be fined $10,000 for not paying the taxes.
It's flamable therefore it puts out energy, %26amp; produces ';smog';.