I'm still having problems with the high idle between shifting. Something new: I ran the air conditioner yesterday because it almost reached 90° here. There are two new things going on when the air conditioner is running. The first is the idle runs higher between shifts and stays high for about 15 seconds after coming to a complete stop. The other is a really quick stop with the air conditioner on occasionally makes the engine almost stall IF the idle doesn't remain high after stopping. I took a look at a couple things this morning and noticed a small oil drop on the bottom of the bell housing, a bit of oil along the mating surface of the oil pan, and again along part of the valve cover at the front of the engine. These oil leaks weren't there a week ago, and could potentially indicated excessive crankcase pressure. The breather tube that connects between the top of the valve cover and intake snorkel is clear. I can't really do much of a check on the PCV system without at least pulling the front wheel off, but I can see some oil vapor floating around in the intake manifold if I look in through the throttle body immediately after shutting the engine off indicating the hose isn't plugged. There is quite a bit of air coming out of the valve cover when I remove the oil filler cap, but a search about this yields results indicating this may be normal on the Duratec. It's been a few years since I changed the PCV valve, so I ordered an entire oil separator kit from Ford. Why the whole kit ? Because I wanted to replace the PCV valve and grommets. It's actually easier to replace the PCV valve if you remove the whole oil separator, in which case I would use a new gasket due to the age of the truck. Well, Autozone wants $19 for the PCV valve, O'reilly wants $23, the gasket for the oil separator is $11 and both places state it will be next Monday before I can get the gasket, and Amazon wants $27 for the PCV valve and a week to ship it to me, and $16 for the gasket. Amazon has lost their minds with pricing over the last year. Just to compare pricing, the PCV valve is $4.36 at Rockauto and the gasket is $4.56. Ford wants $7.86 for the PCV valve and $5.something for the gasket. I ended up ordering the oil separator assembly because the grommets will take a week to get here from Ford. The oil separator should be here tomorrow and comes with all the gaskets, grommets, and PCV valve, and Ford is cheaper and faster than Amazon. What's with the price gouging at the retailers?