Long story short. 400' + driveway. 70+ widow neighbor's driveway parallels mine.First year there all I did was shovel snow feet at a time. NEVER AGAIN! (You would't think for a second I wouldn't shovel her's too? I shoveled it for nothing and plowed.) bought a truck with a plow needed a transmission. Replaced transmission,followed salvage yards warranty. By replaced radiator and filter.Showed them the receipt.Used for short time. started acting up.Delay in shifting,not shifting right and slipped made noise. called seller. Owner ask for miles I put on it. Put 100 miles on it plowing. Stayed in the driveway.Owner said change filter that is common for a transmission sitting in a salvage yard and not being driven much.They get vanished up just sitting. He was right! Spring came truck sat. later in that year in the fall.found another truck with a bad trans.150k miles. It was acting like the first truck. SO what do I have to loose. Change the filter,fluid and VOILA it was on the road. It still didn't shift right,made noises,sometimes slipped. At the same time,the first truck sitting since spring was acting up again.changed filter again. Helped but not right. Remember someone I knew had the same issues in a few mini vans. What they used and I tried.They said it takes a little time to work.days or a week? It worked!!!! I DON'T BELIEVE IN SNAKE OIL BUT THIS STUFF WORKED FOR ME ALSO!!!!! Seafoam Trans Tune. Both transmissions work perfect to this day. That's just my experience. 46re and others.