![]() ![]() 30 miles after switch to BG and my grind was gone for the next 100k until car was totaled (and still shifted better than the Sonata). 2 shops said it would need rebuild so I figured what did I have to lose trying it. I had a Corolla that had gone through MANY fluid changes (some probably GL5) dino and syn and tranny would grind lightly between shifts at higher RPM and downshifts off highway. ![]() They used it when they had complaints of shifting issues. I had experience with the BG from a friend that worked at BMW. The automatic transmission of the 2003 Spectra Kia was a four-speed unit that was designed to provide smooth and efficient shifting between gears. They even list doing a flush with it to get rid of factory fill iirc.Īll of the fluids I tried including factory worked fine in temps above 40 degrees. Hyundai has a TSB for Genesis Coupes in Canada and other places to switch to that based on complaints of cold weather shift issues. Reprogramming the transmission control module with the latest Kia transmission software may fix abnormalities in the automatic transmission and erroneous. My next try based on Molakule's information will be Pentosin MTF2. I'm now on the MT-85 which I think is slightly worse than the BG but still better than factory. I switched to BG Synchroshift II which was better but still not great. My Sonata $ucked to try and get into second when cold (below 30 degrees) when it was new but I'm in NY. Molakule has a lot of info on it.Īny issues your trying to correct or not happy with or just changing to refresh? Kia Spectra Automatic Transmission Buy Online. There was a couple threads on same thing. I would like to run a fill of cheaper synthetic gl-5 gear oil due to availability and low cost just clean out the gearbox, but I don't want to try anything without checking with you guys first!!! If need be I can go to the dealer, but would like to see what you guys may suggest. Is there a gl-5 that is known to be very easy on the yellow metals? I would like to switch it to synthetic for the smoother shifts, but I seem to remember seeing a test on a website where the Lucas synthetic was about the most corrosive on yellow metals out of the whole group being tested. Not sure if the factory fill is synthetic or not, but seeing as how the car has 100,000 miles and it has never been changed, I may have to run a change through it to flush out the old factory stuff. Is there a manual transmission fluid that anyone might recommend for a front wheel drive Kia that specs a 75-85 gl-4 gear fluid? No one local carries it or even heard of it, and mostly what I find online is Redline, which I'm sure is good. ![]()
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