1958 Volks manual trans-use synthetic trans fluid?

Joined
May 29, 2005
Messages
860
Location
Ozark Mountains
It shifts hard so I put in new dino trans fluid and it is much better. Don't know how long the old fluid was in there. Can I change again to synthetic trans fluid to see if it improves more or would it hurt the old seals?
 
Joined
Aug 10, 2005
Messages
3,058
Location
Kansas City
I would just stay with dino, as you said it improved thing quite a bit. If you still feel the need to do something else, change it again with dino in 1000 miles or so.
 
Joined
Sep 5, 2006
Messages
19,479
Location
Chicago Area
It turns out that the newest and best manual trans lubes are synthetic, so why no use the best, like Amsoil or Red Line. It may or may not shift better. It is better for long term use. Manual trannys chew up and shear dino oil.
 
Joined
Feb 1, 2003
Messages
8,756
Location
RI
What weight or spec is required?? Don't worry about mineral oil. Even a synthetic will shear quickly in a manual tranny. The goal is to pick a weight that is thick enough to protect, and thin enough to shift.
 
Joined
May 26, 2003
Messages
9,832
Location
Central Coast, Calif.
Check your shift linkage, any slop will affect shifting. There is a bushing in the pan that supports the rod located an inch or so back from the front of the shift rod. The coupling under the rear seat can also have slop. I like the polyurethane replacements for the coupling.
 
Joined
Sep 5, 2006
Messages
19,479
Location
Chicago Area
Short shifter kits [a simple spacer under the shift stalk] used to be $3.95. Probably 10 times that now. One of the best mods for a VW bug. You didn't have to row the shifter like Charlton Heston as a galley slave.
 
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