I've put roughly 8,000 miles on it so far, Running M1 10w30/Delco PF63 filter.
Dropped the pan on the 10L80 about 3,000 miles ago & swapped the filter, Filled with some fresh Dexron ULV.
Swapped the rear diff oil at the same time with some Reline 75W140.
The right front MagnaRide strut is leaking a little bit...However the ride seems fine. Haven't decided if I'm going to get rid of the Magnaride & replace with some Bilstein 4600's or bite the bullet & buy new OE. Can't believe how well this thing rides with 22" rims.
I have an Aluminum PPE 10L80 pan & a Next Gen Drivetrain valve body kit (With shift valves) on the way.....This unit shifts very well as it is, But these valve bodies are a known issue & I'm going to get in front of it.