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5W-30 instead of 10W for fork oil?

  • Thread starter Thread starter Pendulum
  • Start date Start date
As for using automotive oil in your forks, it's okay as the factory manual for the GS750 called for a 50-50 blend of 10W-30 and ATF. As for 5W-30 ATF instead of 10W-30, I imagine the change would like running 5W fork oil. Kind of thin.
 
trippivot said:
what was the first type of oil used in hydro forks? pure whale oil - am I wrong?
Click to expand...

Probably true. The Japanese were still using fish and whale oil in the 60s and 70s.
Alas, poor Moby, I knew him well...
This explains the unholy stink of fork oil the first time you changed it.
 
Fork oil is readily available, relatively inexpensive, easy to install/change out for a different viscosity, and one variable is removed (mixing different fluids) when experimenting with different weights to achieve a desired result.

I can buy a bottle of Spectro, Bel-Ray, Maxima, Silkolene, Castrol, PJ1, or many other brands I can't think of off the top of my head that has enough to do a couple pairs of forks for $10-$15. Buy three different weights of the same brand, experiment all you want, and you will achieve your desired results for an investment of about $30. Now you can spend a whopping $5-$8 per year to keep it that way.

I don't argue that you can use different fluids in your forks, but I can't understand why you would? The manuals also say to use 10w-40 automotive oil for our engines. Who here still does that?
 
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