GST on Transport Charges from HPCL

Sir, 
         One of my Client is HPCL Dealer and having a Heavy Vehicle carrying IOC Cylinder. the problem is the Vehicle is in the name of the Client and receipts are also credited to Clients account only will there be any GST Obligation for the client to pay GST on Reverse Charge on receipt of transport charges. the agreement with company also have no clause of GST