I have noticed on this model of Civic but not very frequently the transmission will shift somewhat rough. I have heard this is a problem on these models. All maintenance on the transmission is done every 30,000 for fluid change. What about additives to transmission fluid changes???? Any good value or just harm.

 

My daughter's '12 civic ex was shifting strangely between 1st and 2nd gear. Had the fluid changed and still the same. Then I added Lucas transmission additive and have had 0 problems for over 2 years.
Duane