... ,000 small cars and 30,000 large cars around.c.Calculation:Oil for one small car per month, about 5 kg ... and vegetable oils, acidification of oil, oil trench, waste oil, used lube oil. And all over the use of oil refineries, chemical plants, fertilizer, ... f. Production process:1. Add special catalyst into waste oil and pyrolysis under suitable temperature, waste oil and mineral oil products can reach ...