Different functions: automatic transmission oil is special, it has two functions: it can lubricate, dissipate heat, and clean the planetary gear set; on the other hand, it is used as a medium for hydraulic transmission-this is manual transmission oil What it doesn't have.

Difference in nature: Due to the different functions, the viscosity of manual transmission oil and automatic transmission oil is obviously different. Manual transmission oil is more viscous. The main function of automatic transmission oil is to play hydraulic transmission, so it has very good fluidity and anti-foaming performance. And air release performance is also stricter than manual transmission oil requirements.

Color difference: most manual transmission oil is light yellow (new oil), and the color gradually becomes darker and black after use. Most automatic transmission fluids are bright red (and a few are light yellow), and the color gradually darkens after use, turning into dark red and reddish brown.