To give a little context I recently rebuilt my Honda B4RA automatic off of my 2000 Civic with Raybestos GPX Clutches and filled it up completely with Maxlife, the rebuild was successful and the transmission worked perfectly, the shifts were smooth and quick for a while but after a few months of use the shift quality worsened specially in exreme traffic conditions. 1-2 engages with a little hesitation 2-1 becomes very aggressive and neck-breaking and 2-3 sometimes feels like it smacks into gear. What I’ve noticed is that if I leave the car sitting for more than 3 days and come back to it the shifts go back to their smooth ways for a day then start to get worse again. Recently I went on vacation for 10 days and when I came back the transmission was like it was the first day after the rebuild and that smoothness lasted for about 3 days so I thought maybe the issue had fixed itself, I did a drain and refill with Maxlife once again just to make sure and everything was going fine until I had to go into hard traffic, the transmission started to struggle after an hour and a half of constant traffic and the harshness came back in the same way it was before. Wondering if maybe it has something to do with the oil quality and if I should try to reintegrate DW-1 back into the tranny. P.S. I used Lubeguard Platinum to see if the shifting issues might get some relief with it but it didn’t really do much and a lot of it probably got flushed out in my last drain and refill.
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