I know this is probably beating a dead horse and I'll get a lecturing but here goes anyway. My 2006 Honda Accord has 180,000 miles on it. No noticeable trans problems. Possibly a very slight shudder on occasion shifting into 2nd but could be my imagination. Atf was changed at dealer at 69,000. Fluid is looking pretty dirty, only a hint of red to it. Thinking it probably should be changed. Since Honda doesn't sell the Z-1 anymore only the DW-1 should I go with the new DW1, Amsoil ATL, or stick with the similar as original viscosity Amsoil ATF. Cost isn't a factor as I can readily get Amsoil for around the same. My inclination is to go with Amsoil ATF and some Lubegard Red? Or actually just the Amsoil OE OTF as I'm not sure that I need the Signature Series at this point in the game. Thank you in advance for any advice.