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jb-ob · 06-05-2020, 07:27 PM

37,

Not fair for me to comment on either Bratton's or Synder's 600w gear oil as I have no clue how it is created but I have used both. More recently I've been using 140 gear oil from 'Sta-Lube' & 'Lubriplate', as that weight is specified in the early V8 Service Bulletins.

My experimenting with all weight gear oils is because I drive (attempt) a multi-disc clutch which is very non-forgiving, unlike a single disc clutch. A single disc I can 'wind up' much farther with no gear chirping.

After many miles & gear oil changes, it is evident it is the nut behind the shifter. With idle speed correctly set, you still need to take time between gears. Non-syncro, straight cut teeth, & thick gear lube, slow shifting is the nature of the era.

Very different from a close ratio 4 speed Shelby Mustang.

Keep practicing & Enjoy.

06-05-2020, 07:27 PM	#4
jb-ob Senior Member Join Date: Jun 2010 Posts: 638	Re: "600w" trans lube foamy. 37, Not fair for me to comment on either Bratton's or Synder's 600w gear oil as I have no clue how it is created but I have used both. More recently I've been using 140 gear oil from 'Sta-Lube' & 'Lubriplate', as that weight is specified in the early V8 Service Bulletins. My experimenting with all weight gear oils is because I drive (attempt) a multi-disc clutch which is very non-forgiving, unlike a single disc clutch. A single disc I can 'wind up' much farther with no gear chirping. After many miles & gear oil changes, it is evident it is the nut behind the shifter. With idle speed correctly set, you still need to take time between gears. Non-syncro, straight cut teeth, & thick gear lube, slow shifting is the nature of the era. Very different from a close ratio 4 speed Shelby Mustang. Keep practicing & Enjoy.