Thanks a lot for your recommendations. I always struggle when it comes to choosing an oil no matter for what: gear or motor. I don't wanna risk and that's why I first check drivers' opinions and reviews like here. I just think that when mechanics advise oils they can be an interested party. After all, in garages, they usually stick to specific types and brands.
I haven't bought anything yet but I'm going to. Recently I bumped into reviews of lift kits for Ford https://reviewseye.com/best-ford-escape-lift-kit. So, can anyone recommend similar kits for Silverado? Has anyone implemented such things?