Who buys bulk used engine oil
CPCB-authorised recyclers, re-refiners producing base oil, and in limited cases authorised energy-recovery units. Bulk usually means tanker lots, not a few drums.
How to write a buy RFQ
State monthly kilolitres, accepted oil types (engine only vs mixed lubricants), water limit, and plant gate or ex-seller. Mention if you can place collection tanks at large fleet yards.
Supply map
Metro workshop clusters, highway service belts, mining states, and industrial estates are the dense sources. A marketplace listing from a 200-vehicle fleet is worth more than ten unknown drums.
Buy through BioTradX
Raise an RFQ for used engine oil, verify seller type, and build a repeating offtake calendar.