Fork oil: different in each fork (?)
I'm changing the fork oil for the first time (also replacing the springs with Progressives) and I found something odd. Each fork had something different in it.
It's an 09 with 19k miles.
I removed the forks and dumped them out.
The left fork oil looked like oil. Yes, dirty oil. But under the dirt I could tell it had a light amber color.
When I dumped the oil out of the right fork, it was red. I am assuming it was something like ATF (which I understand a lot of people use for the forks).
I am the original owner. So it has been that way since day one; I assume from the factory. Anybody else seen this?
I am going to let them drain overnight. Do you think I am okay just refilling them with the 10w fork oil? Or should I be making every effort to thoroughly clean up whatever was originally used?