How Often Should I Replace the Transmission Fluid?

JB Auto Repair IncIt’s important to regularly check the transmission fluid for fluid degradation, but rather for fluid contamination. This contamination occurs over time with metal shavings and other contaminants from clutches and friction discs inside the transmission. Some of the modern vehicles will not have a dipstick to check transmission fluid, for these vehicles service is recommended at certain mileage intervals. The typical service interval is 60,000 to 100,000 miles. 
As well for manual transmission most manufacturers suggest 30,000 to 60,000 miles as the point at which you should change the transmission fluid in a manual transmission.
Changing the transmission fluid on either manual or automatic transmission more often will not harm your transmission.