Shock oil wt. 30 vs. 7000?

[Vmax911]

I'm confuse about oil weights. I'm used to see weight of 30, 40, 60, etc. However, when looking into diff. oil, the weights are like 3000, 7000, and even 10000. Are the two types of oil totally the same? Or is 3000 wt. somebody elses 30 wt.?

[RC Crazy]

3,000 7,000 and 10,000 and all those are just realy thick oil used in sealed diff's, mostly in 1/8th scale buggies. It slows the diff action since a ball diff wouldnt be strong enough for 1/8 buggies. The higher the number, the thicker it is and the thicker the oil, the slower the diff action. Its not used for shocks, its WAY to thick for shocks.

[Vmax911]

So is 3000 wt. really 100 times thicker than 30wt?

[RC Crazy]

Yep :eek:

[clancy]

measuring viscocity manually is pretty cool. You first have to acquire a viscometer. And the way you measure vis is to put the oil in question in a tube and let it settle. Than you drop a ball bearing into it, and measure how long it takes to get to the bottom of the fluid. This time will correspond with a time on the chart that is included with the vis gauge. Check it out if you get board it's pretty interesting.

[DarkWraith]

The best explanation I have ever seen is found at the following site:

The World's Finest 1/8 Scale Page (http://www.twf8.ws)

Go to the TIPS tab, then CAR TIPS and then select SHOCKS. This will school you something good. :D The only other thing to remember, is that Associated 70 (etc) weight oil is like most others 700 (etc)... They seem to lose a zero in there somewhere. :confused:

[kojak61]

3000wt is like using vasaline in your shocks.