This is what is recommended for most Duramax power steering pumps, I have used ATF but have switched to it, yes it is expensive but the pump is quieter and don't cry like that I'll use this.
Optimized BlueDevil Power Steering Leak Stopper
9 Review
Genuine Honda Fluid 08206-9002 Power Steering Fluid - Superior Performance in a Convenient 12 oz. Bottle
8 Review
🔧 Niteo Motor Medic M2714H/6 Power Steering Fluid for Honda and Acura - 12 oz., with Stop Leak & Conditioner
6 Review
🔧 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
Copper Anti-Seize Stick by Loctite - 20-Gram Size
8 Review
🚗 Permatex 20353 Ultra Disc Brake Caliper Lube, 2 oz. – Advanced Lubrication for Optimal Brake Performance
9 Review
Synthetic engine oil LIQUI MOLY Molygen New Generation 5W-30, 1 l, 1 kg, 1 piece
26 Review
10 Pack of 🔴 Lucas Oil Red N Tacky Grease
18 Review