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**charlie** · August 29th 12, 11:58 PM posted to rec.autos.makers.mazda.miata

On 8/29/2012 2:57 PM, wrote:
> On Wednesday, March 11, 1998 4:00:00 AM UTC-4, William Shepard wrote:
>> Any comments on which is better for the manual transmission, and how the two differ on how they work? Friction Wedge is based on Dupont Teflon...what about Redline? Bill Shepard
>
> I have had great success with Friction Wedge in the past. Now i cannot seem to find it anywhere. I know this post is quite old but perhaps you can help me find it. Thanks
>

All I can say is that the Miata 5 speed depends upon a specific friction
coefficient to shift properly. Without it, the syncros don't work
properly. There may have been problems, because Mazda changed syncros a
bit at different times/years.