I have a 1985 Ford F-150 v8 5.0L, and I’ve had it for about 8 months. I’ve had a few problems with oil leaks coming from the rear main seal and my valve covers, so I’m prone to check my dipstick every few weeks. In the past few weeks I’ve noticed that my oil is a orange/brown color and has the consistency of mud. I’m worried it is a blown head gasket, but I’m not losing any power at all, and the truck runs fine. Any advice on what to do from here?