What auto dealers can put in ESG packs once used engine oil is collected through a documented marketplace such as BioTradX.
Metrics that survive audit
Litres collected, percent of workshops on contract, authorised recycler name, incidents (spills, rejections). Not 'we are sustainable'.
What not to claim
Do not claim carbon credits unless you have a methodology and a registry. Do claim responsible offtake if the papers exist.
Group consolidation
Sum litres across outlets monthly from BioTradX, not from verbal reports.
Public story
If you go public, journalists will ask for a number and a partner. ET Auto and JCBL Group press release show the format that worked: named dealer, named platform, used engine oil.