Well, I have a new non-G project to deal with. With the nicer weather, I moved the '10 Camaro to do a little garage sweepdown and there on the floor, in the oil pan area, driver side, was a few drips of Dexcool.....fuuggg! Put the car on the ramps and look under the car where the leak appears to be coming from... the friggin' oil cooler (actually heater) is leaking. And it appears it's seeping a bit of oil too.
It's not an unheard of issue. Even though they've been around for quite some time, they're a hit and miss issue. Problem is, the list price for a new complete unit is over $400. The exchanger (#9) by itself is over $300. Yeah, right. I can get some new donut gaskets for it (#22), but it requires disassembly and even then won't guarantee it'll seal back up.
Here's a better idea. Do the oil "heater" delete. A ton of LS engined cars came without oil coolers. If I were auto crossing it or doing something with heavy, constant loading, I could see replacing it with a bigger air oil cooler rerouted to the front, but since the car's only got 13K miles on it, there's no need for it. I'm just going to remove it, put it in a box and if the car ever gets sold, the new owner can deal with it.
They sell an oil cooler delete "package" which consists of a new upper rad hose, a brass plug for the side of the block and the oil passage block off cover/bolts/gasket, but I can get all that junk through GM for less.
I've already put in orders for new rad hoses and heater hoses, as I might as well change all that crap out while the coolant's out of it. Got a couple of gallons of real deal GM Dexcool concentrate coming from GMpartsdirect.com (cheaper than buying it off the shelf around here). Just have to mix it 50/50 myself. They have the 50/50 mix already but you only save $4 per gallon for half as much coolant. Math says use the big measuring cup and mix it myself with deionized water (GM says clean, drinkable water- fugg that) and get the second gallon of 50/50 for $4.
I know the thought has crossed your mind.