Morrisons Petrol Station – Johnstone – Opening Hours & Petrol Station Details Morrisons Petrol Station is directly situated at 30 Napier Street, approximately a 0.15 mile drive north-west of the centre of Johnstone (near Rankine Park and High Parish Church). This petrol station principally provides service to patrons from the districts of Cochrane Castle, Brookfield, Linwood, Kilbarchan, Johnstone Castle, Johnstone Town Centre, Elderslie and Millikenpark. This page will give you all the information you need about Morrisons Petrol Station Johnstone, including the opening times, address info, email address and further details.