Declare subsidy upfront; give sops to private refiners too.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/revise-diesel-price-no-more-re-1-time-says-panel
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-line-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fuel-pricing
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/reliance-petrochemicals
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/petrochemical-industry