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 Transmission oil,synco problem

 Created by: Saxman51
Orig. Posting Date User Name Edit Date
Jun 1, 2020 03:32AM kenatminimania Edited: Jun 1, 2020 03:34AM 
May 30, 2020 11:31AM onetim  
May 30, 2020 02:48AM Saxman51  
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 Posted: Jun 1, 2020 03:32AM
 Edited:  Jun 1, 2020 03:34AM
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Quote:
Originally Posted by Saxman51
I have an NB 99 anniversary edition with a 6 spd. tranny. I changed all the fluids when I purchased the car,diff, trans motor,coolant. I used redline racing manual trans oil and started to notice 3 gear synco clipping on upshifts and downshifts.I read that switching to Ford manual transmission fluid could help.the car has over 100,000 miles so I decided I'd try switching rather than a rebuild or switching trannies. Now upshiftes are smooth with no clipping. Downshifted still have a bit of clip but if I double clutch I can drop into 3rd. I'll see how long this works, thanks for listening.
Not sure what the NB 99 model is, but I have heard of manual transmissions clipping on shifts with some fluids and not with other fluids. As long as the fluid that works is within spec's by the transmission manufacturer, I say go with it.

I wonder if the 'racing manual trans oil' is made for straight cut gears which may not be appropriate for synchro's?

 Posted: May 30, 2020 11:31AM
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I have used the redline oil to save a couple of transmissions. What type or spec of Ford fluid are you using?

 Posted: May 30, 2020 02:48AM
Total posts: 1
Last post: May 30, 2020
Member since:Nov 20, 2019
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I have an NB 99 anniversary edition with a 6 spd. tranny. I changed all the fluids when I purchased the car,diff, trans motor,coolant. I used redline racing manual trans oil and started to notice 3 gear synco clipping on upshifts and downshifts.I read that switching to Ford manual transmission fluid could help.the car has over 100,000 miles so I decided I'd try switching rather than a rebuild or switching trannies. Now upshiftes are smooth with no clipping. Downshifted still have a bit of clip but if I double clutch I can drop into 3rd. I'll see how long this works, thanks for listening.