Hello everyone. I'm hoping to get some opinions about sludge under the valve covers. I'm doing some engine work on my Ford 5.4 3v. When I removed the valve covers, I noticed more sludge than I expected. I've used Pennzoil Ultra Platinum and Kreen since I've owned the car, and I don't doubt that it's helped. Since I have the valve covers off, is there any way I can irrigate this? To clarify, I was considering spraying diesel fuel or karosene in this area, and just letting it drain into the oil pan. Is this a possibility? Other ideas? Thanks.