I took my 2015 Honda Accord to the dealership to have a recall serviced. While performing the service, the mechanic recommended that I also had my manual transmission fluid (MTF) flushed since the car's odometer had recently passed 30k miles. I declined because they were asking for $130 to do it and I figured I could do it myself for less.
The problem is that when I got home from the dealership and reviewed the service manual which stated that the MTF should be change every 120k miles under normal driving conditions.
How can I determine if I really need to change my MTF? I searched around and found that if the fluid is bright red then it means that it's still good. And that brown or black fluid means that it should be replaced. However, I don't think my car has a dip-stick to the transmission fluid, so I don't know how to inspect it. What should I do?