Track used engine oil like a parts SKU: litres generated, litres sold, documentation rate, rejections. BioTradX as the data source.
Simple formula
Expected litres from oil-change count times average drain, versus weighed offtake. A large gap is a process failure.
Quality KPI
Rejected lots and water complaints. Train the pit if this is not zero.
Commercial KPI
Rupees per litre versus last quarter. Marketplace quotes make this visible. Cash sales do not.
Dealer groups
This is how you get a number journalists can print. ET Auto could cover Globe Toyota because the operation was concrete enough to describe.