I have no idea what the GM dealer threw at my Hummer during a flush a few years ago, but I'm guessing they weren't AC Delco products. It seems like the boost systems on this GMT800 need the right fluid to work well. At least it suits me. Skip this fancy stuff and get OEM specs in this case!
Optimized BlueDevil Power Steering Leak Stopper
9 Review
π’οΈ ACDelco GM OE 10-4017 Auto-Trak II Transfer Case Fluid - 33.8 oz
9 Review
π§ TRIAX Powerfluid 450: Lifetime Fill Power Steering Fluid, CHF 11S, CHF 202, CHF 7.1 for European Cars | OEM Grade | Hydro-Pneumatic Suspension (1 Quart)
7 Review
LIQUI MOLY Oil-Verlust-Stop, 0.3 L
11 Review