A shocking question.

Milton

Milton

Well-known member
I did my due diligence and performed a search regarding shock fluid. Quite confusing results. Everything from the original glycerine to 85/140 diff oil, hydraulic oil, M-564 ???, Brattons #24920 mystery stuff, Mobil 10/50, etc.

What is the definitive answer if there is one.
 
I would use soem kind of oil rather than the original glycerine, which attracts moisture. The weight of the oil depends on the wear in the shocks.
 
Tom Wesenberg said:
I would use soem kind of oil rather than the original glycerine, which attracts moisture. The weight of the oil depends on the wear in the shocks.
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Well that sounds fair, would that be a multi-viscosity oil to offset the seasonal effects of the temperature? Also, during my search, I came across a statement that glycerine + oil = goop. If so will I be able to identify the contents of the shocks by smell or feel so I can clean out the contents if necessary?
 
I've done very little shock work, but have made some heavy duty tools to use when I rebuild mine. Hopefully you can get your's apart to clean and check them for wear.
 
I had some worn ones that I took apart and cleaned then filled with hydraulic jack oil and STP. This has worked out pretty well but those shocks were fairly tight and not loose in the bore.
 
Well I hit on the shocks today and discovered that they were all full of fluid except one which was down enough that I put some 30 weight in it (like an OK rebuild). I will keep an eye on that one because if it did have glycerine in it the mix will gel. Anyway I got lucky and just had to adjust them and shim and tighten a couple of the links. Took it out on the road and what a difference. Hook into curves and the car is a lot more stable, come out of the curve and I can feel the shift back to center on the shackles. Hit some hefty bumps and it was like they didn't exist. Now it is fast, can stop, and can corner. What else do I need or want?
 
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