I pulled and cleaned the valve covers when I replaced the leaking gaskets. But they really need a lot of work.
Instead of going to all the trouble of cleaning and painting I went with an inexpensive set of chrome covers plus a new PVC valve, chrome breather and a chrome oil cap. The start of the process of cleaning up the engine.
I needed to replace the heater hoses and I’m glad I bought a correct set with formed 90 degree bends. Made for a nice tight fit at the top and bottom.
I’ll be adding STP to the oil to hopefully improve oil pressure. It was running about 20 lbs when hot. I’d like it to be around 40 when hot and at speed. The High Mileage oil likely contains ZDDP as does the STP. So that should help against the lifter/cam contact wear.
I’ll also be adding this to the gas for a couple of tanks at least. I’m hoping my low compression in #1 and #8 is due to sticking compression rings. This product is supposed to lubricate the compression rings and that might loosen them up if they are indeed stuck.