Hey everyone! I bought a 2013 civic si about a month ago. It's sitting at 67k miles and I just had the transmission fluid changed. I bought it private sale and honestly wanted to make sure the fluid was alright. Just today I was in traffic, stop and go and I was at a complete stop and first gear would lockout on me like I was hitting a wall. I quickly put it into 2nd and it went right in. The drive home I had no other problems. I just went out to my car with it turned off and the lockout happened again about one out of the 10 times i put it into first. I want this car to last, I've wanted a 9th gen forever and I dont hear any grinds and I haven't beat on it. If anyone has had a similar problem please lmk.