I did the first drain and fill on my wife's 2007 Honda Fit Sport 1.5L 5spd Automatic over the weekend - 72,037 miles. Had the original factory Honda Z-1 ATF. Work got in the way of doing the 3x drain and fill and she racked up the miles quicker than I was expecting. So now I'm doing the rest of the D&F's this week 50-100 miles apart from each other. Using the Honda DW-1 that replaced the Z-1 as I already had 9 quarts sitting in my garage. 2.5 quarts drained, 2.5 quarts added with minimal gunk on the magnetic drain plug. 6.3 quarts is total system capacity, so it's about 40% DW-1 and 60% Z-1 at moment.
I was wondering if anyone has any long term reviews of doing just the drain and fill methods swapping from Z-1 to DW-1 if the fluid is holding up better than the Z-1? The Z-1 isn't exactly known to be a good fluid.... All I've really heard mention is a little bit jerky of shifts on the 07/08 Fit's with the DW-1. Too soon to tell just yet for ours. The DW-1 is a bit thinner across the board than the Z-1 (when new). Of course the old Z-1 I drained was a good bit thinner than the new DW-1. Forgot to save a sample.....
I was considering swapping over to Amsoil Signature Series Multi-Vehicle ATF due to the good results people were having on several Honda forums, but none really mentioned what fluids they've mixed with the D&F's. Some were straight from Z-1 and some were straight from DW-1 best I can assume by the model and year. The 07 Fit's transmission will have approximately 78% DW-1 and 22% Z-1 if I switched over to Amsoil ATF on a 4th drain and fill. Wondering how the Amsoil would mix with an already mixed ATF? If I'm thinking correctly it would be (IN A PERFECT WORLD) 47% DW-1, 40% Amsoil, and 13% Z-1. A 5th drain and fill, 2nd with Amsoil would equal 64% Amsoil, 28% DW-1, 8% Z-1. 6th D&F would mean 78% Amsoil, 17% DW-1, 5% Z-1. Comments from anyone with experience with the mix of these 3 fluids in similiar amounts? Need the Honda slushbox transmission to last a few more years of city driving in NW Florida.
New DW-1 left, old Z-1 right.
It has a "non-serviceable" AT filter according to the Honda dealer, but I have the replacement filter that I plan to change during the 3rd drain and fill. As well as replace the 3rd gear pressure switch that has been hit and miss on hot days.
BTW the Honda dealer here is a joke as far as the service and partsdepartment, so I buy all parts online and they no longer touch my wife's Fit for anything including recalls.
I was wondering if anyone has any long term reviews of doing just the drain and fill methods swapping from Z-1 to DW-1 if the fluid is holding up better than the Z-1? The Z-1 isn't exactly known to be a good fluid.... All I've really heard mention is a little bit jerky of shifts on the 07/08 Fit's with the DW-1. Too soon to tell just yet for ours. The DW-1 is a bit thinner across the board than the Z-1 (when new). Of course the old Z-1 I drained was a good bit thinner than the new DW-1. Forgot to save a sample.....
I was considering swapping over to Amsoil Signature Series Multi-Vehicle ATF due to the good results people were having on several Honda forums, but none really mentioned what fluids they've mixed with the D&F's. Some were straight from Z-1 and some were straight from DW-1 best I can assume by the model and year. The 07 Fit's transmission will have approximately 78% DW-1 and 22% Z-1 if I switched over to Amsoil ATF on a 4th drain and fill. Wondering how the Amsoil would mix with an already mixed ATF? If I'm thinking correctly it would be (IN A PERFECT WORLD) 47% DW-1, 40% Amsoil, and 13% Z-1. A 5th drain and fill, 2nd with Amsoil would equal 64% Amsoil, 28% DW-1, 8% Z-1. 6th D&F would mean 78% Amsoil, 17% DW-1, 5% Z-1. Comments from anyone with experience with the mix of these 3 fluids in similiar amounts? Need the Honda slushbox transmission to last a few more years of city driving in NW Florida.
New DW-1 left, old Z-1 right.
It has a "non-serviceable" AT filter according to the Honda dealer, but I have the replacement filter that I plan to change during the 3rd drain and fill. As well as replace the 3rd gear pressure switch that has been hit and miss on hot days.
BTW the Honda dealer here is a joke as far as the service and partsdepartment, so I buy all parts online and they no longer touch my wife's Fit for anything including recalls.
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