Sorry if this sounds like a newbie question but here goes.
My 2004 GP has a minor pan gasket leak, on the order of one quart every 3500-4000 miles. I checked the oil this morning, going on a road trip later, and the oil was in the hash marks but just barely. The dipstick unfortunately does not have low or high printed on them I went ahead and added a quart. Could this be too much oil? How much overfill can a 3800 safely take? Ive heard horror stories about foaming and throwing rods, and that not happening until youve been on the highway for a while.