Shell Lubricants has introduced Shell Donax TX, a heavy-duty semi-synthetic automatic transmission fluid. It is designed for use in Allison heavy-duty automatic transmissions and those of other heavy-duty transmission manufacturers.

The transmission fluid offers a high performance additive package that allows for extended drain intervals up to 100,000 miles in normal service, said Shell Lubricants. Field trials of equipment with Allison heavy-duty automatic transmissions have shown a drain period of 50,000 miles in severe service to be appropriate.

Shell Lubricants noted that the product does not have Allison TES-295 approval, but the company said it is suitable for use and guarantees the performance of the fluid.

For more information, go to www.shell.com.