RepairPal Certified shops can diagnose and repair your 1997 Nissan Pickup. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Just under 4 quarts when changing the filter as well. Nissan recommend 5/30W, but 10/30 W is probably best. If your truck has a lot of miles on it 20/40 W may reduce oil consumption a little yet give good lubrication protection.