I know of 2 service stations in the Limerick area that opened and closed within a couple of yeasr, both costing the owners a great deal. The margin was too tight for both, hours were too long and recovering the initial outlay on fixtures after closing was impossible. The only model I think works (i.e turns a reasonable profit) is the larger franchise type station with a lot of footfall. The family connection could end horribly if it all went wrong. I'm no expert in this field but IMO I'd run a mile from this.