norwich to brighton in a mongayoe!

going to brighton friday b'day **** up (only a year till i'm 30)so the last b'day i can celebrate,gonna have to hire a ford mongayoe cos still no diagnosis on why turbo overheats,changed stat cos it used to run cold and then get hot (turbo)lose power,turbo has'nt got hot for a while but i dare'nt trust it,so begs the question why have luxury rangie that cant go up a steep hill without an ahstma attack,specialist all say they cant see any problem,i can see a **** load of oil in turbo pipes and that is fine apparentlly(muppets),i'm wondering if it is the chip i'm running maybe underfueling,who knows not the so called specialists thsts for sure.