Overview
AL-4 is a automatic transmission fluid of the AL-4 type. The product name identifies the transmission-fluid type it is formulated for; it is not a statement of approval by any vehicle or transmission manufacturer.
Published typical values are 43 cSt at 40 °C and 7.9 cSt at 100 °C, a viscosity index of 169 and a pour point of -36 °C. Flash point, appearance and copper corrosion are also listed in the specification table.
Application
Automatic transmissions specifying an AL-4-type fluid
Use where the vehicle or transmission manual names this fluid type. Confirm the exact fluid specification before filling.
Feature
Low-temperature fluidity
Pour point of -36 °C (ASTM D97) with a viscosity index of 169 (ASTM D2270).
Feature
Viscosity profile
43 cSt at 40 °C and 7.9 cSt at 100 °C (ASTM D445).
Feature
Copper corrosion reported
Copper-strip corrosion at 100 °C (ASTM D130) is part of the published test set.