Thanks for the replies. I have changed the filter around 10,000 mile ago. It was dirty. I also bled the line about the same time and the oil was foamy!!! The reason that I thought that it couldn't be the cells because I changed them 30,000 miles ago. The recommendation on this site is to be change them every 100,000 miles. I was thinking that if the shocks are bad they would shorten the life of the cells?
where the other filter would be? Inside the height control valve in the rear? Is it blocked? It make me wonder because the car sometime ride perfect specially when i don't drive it for two to three days? other times it is just bad!!!
I am going to test couple of more things before i invest in new shocks and cells. Any other thoughts would be great.