- Joined
- Aug 26, 2022
- Messages
- 51
I recently put Idemtisu Racing Gear Oil (pictured) in my Aisin AY6 manual transmission. I beat the hell out of this transmission, and this oil made my shifts much smoother. My question is, would a 'racing' formulation pose any problems for a daily driven car? Like 'racing' brake fluid needs to be changed more often than regular brake fluid because it's more hydroscopic, for example