"Robert Woerner" <rightonbob at webtv.net> wrote: > What's the best oil and filter to use on a old 88 5ktq ? bob Filter: OEM, either Mann or Mahle. Oil: synthetic of your choice; Mobil 1 if you're not sure. Weight depends on where you live; try 5W30, 5W40, 10W30, and 10W40. HTH, Kent '94 100 S Avant '89 200 TQ, "Bad Puppy"