Suspension performance cool vs hot air temperature

I have a 1977 Chevy C-10 2WD 1/2 ton Suburban with 140k miles. When I drive it in the morning (air temp is 75-85 degrees) the ride seems fairly quiet, the suspension seems to dampen out minor road variations fairly well. In the afternoon (air temp is 90 - 110 degrees) the ride is noisier, I feel every little variation in the road and the ride has a distinct bouncy / jarring feel to it. I figure joints will have more mobility when warm and may be looser. Perhaps cold grease cushions/quiets worn joints to some degree, but all my ball joints,control arm bushings and front wheel bearings are new. This leads me to suspect my shocks.

My shocks are Monroe Gas Magnums with about 80k on them. I am going to replace them with KYB Monomax, Monroe Reflex or Gabriels. My question are...

  1. Do shocks loose their damping effectiveness in the heat when they get old?

  1. Which shocks perform better under hot conditions? Are their shocks that are rated for performance in high temperatures?

  2. Has anyone had similar experiences to mine?

Thanks, Bob

Reply to
Robert L. Wells
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to what it says on the door/book, not the "max" on the tire....if thats what you do...

Reply to
Scott M

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