Fixing leaks isn't real hard, you just have to set a time aside to do it. Those 258s are notorious for leaking out of the rear main seal. I've replaced two of them in the past, but it also means you have to replace the oil pan gasket since the pan has to be removed to get to it. My XJ leaks now and it looks like the valve cover gasket, oil filter adaptor 0-ring, oil pan gasket and the rear main seal all have to be fixed. I'm going to wait for it to warm up a little bit and I'll knock them all out in one day.