2013 Chevy Express 3500, 170k miles.
I’m putting in a brand new GM power steering pump, all new lines, a filter, and I already installed the brand new GM hydroboost. There is much debate around using PSF or ATF. My GM manual says to use PSF. I bought a gallon of Napa PSF because I’m going to flush the entire system. I’ve mostly worked on older cars where using ATF didn’t matter but I’ve been told that on newer cars, I should use what the manual recommends. That being said, is there any upside to using ATF or any downside to using PSF? Would a better-quality ATF be better than Napa PSF? I want to use whatever is going to be best for protecting and prolonging the components in my van within a reasonable cost.
I’m putting in a brand new GM power steering pump, all new lines, a filter, and I already installed the brand new GM hydroboost. There is much debate around using PSF or ATF. My GM manual says to use PSF. I bought a gallon of Napa PSF because I’m going to flush the entire system. I’ve mostly worked on older cars where using ATF didn’t matter but I’ve been told that on newer cars, I should use what the manual recommends. That being said, is there any upside to using ATF or any downside to using PSF? Would a better-quality ATF be better than Napa PSF? I want to use whatever is going to be best for protecting and prolonging the components in my van within a reasonable cost.