Is the type of grease I use for the chassis and driveshaft grease fitting very sensitve???? I don't want to use the wrong type.. the kind of grease that is in our grease gun now is purple, daddy said it's slick 50.... what all is this good for greasing??? What all do I need to grease???????????? I'm just trying to cover all the maintence that was neglected for years on my new truck........ I found ATF in the 203 today !! I don't think the previous owners had it all together.... anyway, sorry for the A.D.D.................... any tips of greasing would be wonderful..