Do these Bilstein 5100's look bad to you ?

[DKCAIMS]

My Father purchased a 2000 Yukon from a member here 4 or more years ago now and it's about time for new tires.
As far as I know, the rear coil springs are still the originals from the zw7 package.
The prior owner installed F150 keys up front, 1.5" spacers in the rear and Bilstein 5100's all around prior to selling it to my Father.
Going back to prior posts of the seller, I could not find any mention of new springs. They were mentioned on a "to do" list, but never done as far as I know. He has not been active on the forum for a few months now and has moved out of state.
It's been driven approx 22k miles since my Dad acquired it and the rear always seemed soft, especially when a few bags of concrete were thrown in the back and the couple times a trailer was towed it really drooped.
As I understand it, the weaker zw7 springs being installed would just accelerate the wear on the shocks.

Since springs are pretty cheap, I'll just install new ones, z71 or Bilstein.
I was going to just keep the 5100's, but since I crawled under and had a look at them, they don't look too good to me and I'd like your opinion as well.

Here are some pics...

Thanks in advance for your comments !

 

[Sasquatch]

Judging from the amount of oil on three of the shocks it looks like they`re leaking from the seals and time to replace them but to be sure you can just unbolt one end of the shock and try to compress it and if it`s real easy to push in they`re blown. I have 5100`s on my yukon and they have a lifetime warranty. I`d contact them to see if they`ll replace them.

 

[DKCAIMS]

Judging from the amount of oil on three of the shocks it looks like they`re leaking from the seals and time to replace them but to be sure you can just unbolt one end of the shock and try to compress it and if it`s real easy to push in they`re blown. I have 5100`s on my yukon and they have a lifetime warranty. I`d contact them to see if they`ll replace them.

Thanks Ted !
Same conclusion I came to, I just wanted confirmation.
My Dad is deciding if he wants to keep the lift and tire size or return it to stock height and get smaller tires.
He drives it 3-4k a year normally and I can tell you first hand the only dirt it's seen over 4-5 years is maybe 10 miles on residential/maintained dirt roads, so lifted and off road capable is a non issue to him.
Since my Dad is not the original purchaser and does not have any proof of purchase for the shocks, I think he will just toss them and replace them.

 

[ccapehartusarmyINF.(ret)]

hows it ride im assuming its pretty bouncy since you said you only threw a couple bags of concrete in the back and it squatted unless there 500lbs bags of concrete or the trailer had like a 1000lb toungue weight
1 of 2 things is wrong if yer rear end is squatting either yer schocks are bad or yer overloaded