Originally Posted By: JamesBond
The fluid in that little shot glass reservoir is the hydraulic fluid used to operate your clutch. People may call it "clutch fluid" but the fluid in there is Dot 3 Brake Fluid. It may not get dirty looking but it does get old and should be replaced every few years for best performance. People may refer to this as "Bleeding your clutch."
Problems with the hydraulic clutch system can cause problems when shifting such as the car being stuck in gear, the clutch not releasing, the shifter being hard to operate or crunching when shifting.
Your problem may also be old worn out oil inside the transmission itself. You can not see this fluid under the hood, and can only access it by removing the drain or fill plugs on the side of the transmission. When this fluid is worn you may also experience difficulty shifting gears, or noises from your transmission. Changing this fluid would be known as "Changing your manual transmission fluid." This fluid is $10-15 per/qt. and you need 1.5-2 qts. The labor involved includes removing 2 bolts that are easily accessed from under the hood or under the car.
I had a similar issue with my ford ranger, was a bit "rough" shifting into 1st sometimes 2nd at times. Change the manual transmission fluid, drove it for few hundred miles now, rough shifting is gone. IF your mechanics refuse too do it, youtube it, its not hard too do, little patience helps as well.