Having gone through 3 power steering boxes in 52k miles I decided to make a change. Added a PS fluid cooler and short time ago and switched to synthetic power steering fluid. The 03's have HUGE PS coolers BTW.
After putting in the Royal Purple Synthetic PS fluid I noticed that the turning effort was reduced and the steering wheel felt "smoother". A nice improvement for just changing fluids.
I put RP Synchromax in the transfer case about 4k miles ago and have not had a single gear grind when engaging 4WD at any speed, this is a nice improvement because it used to grind at any speed over 25mph with ATF in it.
Disclaimer: I dont sell RP, work for RP and dont make a penny if you buy their products. The stuff simply works very well for me.
After putting in the Royal Purple Synthetic PS fluid I noticed that the turning effort was reduced and the steering wheel felt "smoother". A nice improvement for just changing fluids.
I put RP Synchromax in the transfer case about 4k miles ago and have not had a single gear grind when engaging 4WD at any speed, this is a nice improvement because it used to grind at any speed over 25mph with ATF in it.
Disclaimer: I dont sell RP, work for RP and dont make a penny if you buy their products. The stuff simply works very well for me.