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I bought a used HX civic but the manual transmission has some bad bearings and needs to be replaced. just wondering if anyone knows about the longevity of these 98 HX manual transmissions. i really want to get the best gas mileage (HX) but don't want to get another HX m/t if its gonna go out under 100,000 miles. i have the option to get either a used LX or HX tranny (both around 50k). By the why, i don't race or rallie my ride i want MAX MPG. I have reason to believe the previous owner drag raced this ride and this could account for the bum tranny at only 84k.

Any suggestions???

 
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their longevity depends entirely on how well they were treated. if you go with another HX tranny you'll be able to cruise the highway at lower RPMs but the CX and DX final drives are the next closest matches to the HX.