Hey guys new to the forum and just wanted to ask if anyone has any sound advice on changing transmission fluid. I bought my 2013 accord with 46,000 miles on it and immediately changed the oil and put 4 new quarts of transmission fluid of the OEM from Honda dealership. Ive put about 4500 miles on it and am wanting to drain and fill again... My question is id like my transmission to last as long as possible and know there's some debate as to which transmission fluid to use. I've heard amsoil makes a good transmission fluid even better than Honda. If I decide to switch over can I just drain the 4 quarts and add the amsoil and not worry about mixing the two until I drain and fill in another 5-10,000 miles. Any advice is appreciated thanks guys.