hi all

the gas boy filled up Gas instead of Diesel to my friends Van (Kia), My friend asked why the gas boy filled up gas instead of Diesel. the gas boy replied "Sir, okay lang un sir tatakbo naman yan" believing what the gas boy said, my friend after filling up drove away, after 2-3 km of travel the Van started to Jerk and stalled. So my friend went back to gas station (Caltex) to complain

Question:
1. What will happen to the engine / fuel line / ? (overhaul, fush..etc)??
2.will caltex shoulder all the expenses?