Guys i need your help with this one. Im planning to take-over my SIL's car which is a honda ESI model. Working pa naman ang car (napaayos naman dati pero may minor issues) :

Panel Gauges not working (speedo,gas,lighs - everything you see in the gauge panel).
GAS tank - pag 500 umaapaw na
ETF Fluid nauubos


also pag magchange oil ba since na ondoy to dati, ilang beses namin flushing?