Oil jug foil damage happens when the oil is poured into the clean side of the filter, not into the oil pan. Any chips from the jig fix also go straight to the sump and will be filtered before getting to the nozzles. If you use an air compressor or vacuum cleaner on blow to pressurize the oil areas very little, if any chips will get into the case. I've removed the cover right after a jig fix when the pin was hit and needed to be pounded back in, there were absolutely no chips inside the engine.