I just got the Fuelmaster one, And What I did Was Saved just at the start of it, I also Turned my sound up, and put the subtitles on, So All I needed to do was make sure I was reading the Right Voice Lines.
for the Fuelmaster trophy: it's worth noting that even if Doc runs in at the end and seemingly fixes your mistakes, it doesn't mean anything. i did this 6 times in a row, without messing up, only to have him run in and turn cranks and such. it means nothing. i assumed that since he had done that, i had messed up somewhere along the way. however, if you wait until the end of that cutscene, it will pop for you.