New AHC fluid has a pinkish tint. But that tint doesn’t last very long. Then the fluid will be clear… as long as it is clear with no dark specs in it, it’s good.I just did a AHC fluid change thanks to the "ABC of AHC" thread and my ride is for sure improved. Really the ride is better than any car I have ever owned. I replaced the bleeders at the globes but could not replace the one at the accumulator as its a different length than the others and I didnt plan for that. I replaced the reservoir as well for good measure. The fluid I removed from the reservoir via vacuum pump looked clear but for sure not pink. The fluid I got from the bleeders was very dark and very foamy. My question is should does the foamy fluid for sure mean globes have lost some or all of there initial charge to the fluid I just removed? My globes have a 2002 date on them (2003 lx470, 104,000miles).
Dark fluid is age related. Foamy fluid is aerated fluid… probably from nitrogen weeping into the fluid.
Make sure your hydraulic struts are not leaking. Clean them off very well… And watch over a period of time to see if they get wet.
If they are leaking from the hydraulic connection at the top, there is an O-ring and a backing washer that need to be replaced. Cheap and not that easy. It also would be a good time to do bushings as well. Really freshen up the ride.
If your truck is rusty, don’t even bother trying to replace the rear bushings… Unless you’re willing to replace the struts as well… Probably have to cut them off if they’re seriously rusty.
Replacing rear strut bushings is a pain in the ass job on a rust free, California truck.
Globes from 2002 are 23 year old originals. New globes and fresh AHC fluid will help to restore the ride quality.