I just aquired a 95' YJ 2.5l Std. with 217k's and I'm gonna change the oil this week and was wondering whats everybody using for oil these days? Synthetics or conventional oil? Also what brands?
On an old high-mileage motor, I'd stick with whatever the previous owner used. A synthetic is a good idea in winter, but might leak more easily if you currently have a small weep. If you want to so synthetic, at least use the High Mileage versions that are out now, but IMO you would be wasting your $ on synthetic until it gets really cold out.