I'm planning to replace the engine oil pan gasket with a Toyota OE one. What other similar seals should I address while I'm under the truck, just for preventative maintenance? Other than PM, I've got what appears to be seepage at the engine/trans union and a bit at the front of the engine, dripping on the tie rod. Can I easily do anything about that? I'd like to limit this particular effort to not much more than dropping the oil pan.