I have a 2005 Honda odyssey and I am looking to try Castrol Import MV ATF fluid. I was going to try Maxlife but after having a conversation with a local transmission shop owner who is known around town as really knowing his stuff and doing good work I am thinking Castrol might be better. I would like to hear about anyone who has had good luck with it and if so how many miles have they run. Going back to my conversation this gentelman went into explaining how with my generation Honda transmissions (he rebuilds many of them) have had better luck running a slightly higher viscosity fluid. He went into more than I understood but apparently in an effort to increase fuel ratings many automakers started looking to reduce parasitic loss everywhere and in the transmissions you will find that it was done by moving to smaller fluid pumps and some long explanation as to why the torque converter would drag at idle causing fluid to overheat (issue with 05 honda transmission mine already had torque converter replaced under warranty) also something was said about how as a transmissions got older the tolerance between the pump housing and wheel? would cause the pump to have to work harder so on and so forth.... I should have said at the beginning that I know next to nothing about transmissions so I won't pretend to say more than what I can remember from the conversation but long story short higher viscosity oil in the Honda transmissions of that year range would help longevity as well as reduce heat. So I found the cs values of Honda Z1, DW1, Maxlife and Castrol and sure enough Castrol was slightly thicker 8.0 cs vs 7 and 6 or so.... Any way I know thats long but I thought it was an interesting conversation and I thought I would throw it out there as part of the conversation about how well is Castrol working for Honda owners.... By the way he said that in later years manufacturers have done a better job of learning how to match components and lower viscosity fluid to help achieve the fuel savings they are looking for as well as maintain durability but like most things trial and error was in play in the beginning.