Andy. Think about it, By jumping or adding another battery you have almost doubled the current and the starter as you say still turns over at 80%. Yes, it will be a little slower when cold. But as I said earlier. Starter drag due to age and wear. This problem shows up faster when cold. When summer comes and things heat up ( weather) then it will still strain the battery a little and the drag will somewhat go away for a while till it get worse. Then as it is has being pushed to the limit and the drag will start showing up in warmer weather and then one day it won't turn over. In the rebuild business, it's starters in the winter and alternators in the summer ( heat). If you will notice the alternator needle rides normally higher in the winter than in the summer. John Hervey www.specialTauto.com << yes i have tried jumping the car also. no start. it only turns over, sounds about 80% the usual speed during the summer. i doubt it's dragging - the DeLorean starter is supposed to be pretty darn bullet proof, right? >>