Shock Absorber Oil
#1
Shock Absorber Oil
What do you use in place of "Delco Shock Absorber Fluid" these days? I drained and flushed the shocks on my 48 and they seem to work fine but after driving for awhile I seem to be getting some tire bounce. I used hydraulic jack oil and don't know if the oil is becoming aerated.
#4
Or ATF it's anti foaming also. I would be leery of anything thicker than 20 wt. I could see bad things happening with anything as thick as STP. That oil has to move through tiny valves to work.... Tedd
#6
Confirming what has already been stated regarding motorcycle fork oil. Motorcycle fork oil (cruisers/baggers/bobbers) standard weight is generally 5. Happy medium is a 7. Most often no one goes above a 10. AMSOIL sells both #5 & #10 motorcycle fork oils. H-D refers to their fork oil as “E” (just as a general statement) which I think is ~7. Can’t recall exactly. I ride an Indian and use AMSOIL #5.
#8
Try contacting:
https://dansshocks.com/
Dan rebuiids spiral shocks for the HOBBY from 1953-1982 per his website, but he could have a good recommendation for hydralic oil for your '48 shocks. He rebuilt the shocks on my 442 so I know he is legit.
Good luck~
https://dansshocks.com/
Dan rebuiids spiral shocks for the HOBBY from 1953-1982 per his website, but he could have a good recommendation for hydralic oil for your '48 shocks. He rebuilt the shocks on my 442 so I know he is legit.
Good luck~
#9
Motorcycle fork oil is the answer. Out of five grades on the shelf at my local motorcycle shop, I chose one in the middle. I reuse a empty floor jack oil container with the pointed spout. Be sure to leave about 1/8" air space for expansion, and first clean off the surface where the pipe plug is located so no junk falls into fluid chamber. What a huge difference in rebound, jounce, road noise judder handling etc etc. Also no leaks suggesting compatibility with existing seals. - Good luck
#10
I fully agree about the fork oil for bikes, over the years I have tried mixes of engine oil and STP to really high viscosity and it will for sure give you a stiff absorber but bike oil is the way to go.
If you have leaky absorbers STP+oil might be a way to minimize leakage.
If you have leaky absorbers STP+oil might be a way to minimize leakage.
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Tedd Thompson
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June 14th, 2012 07:28 PM