TCI Max-Shift Break-In transmission fluid provides critical protection during the first 30 minutes of run time after an automatic transmission rebuild. It guards against heat build-up and wear during the break-in period and initial drain, and it is developed from ultra-pure base oils that resist viscosity breakdown. This package includes three one-gallon bottles.
- TCI Max-Shift break-in automatic transmission fluid
- Package: three 1-gallon bottles
- Protects during the critical first 30 minutes of run time after a rebuild
- Guards against heat build-up and wear during break-in and initial drain
- Developed from ultra-pure base oils that resist viscosity breakdown
- Single gallon available as 15901
- Part number: 15900TCI
FAQ
How is the TCI 15900TCI break-in fluid packaged?
It is sold as three one-gallon bottles. A single gallon is available as 15901.
What is break-in transmission fluid used for?
It provides protection during the first 30 minutes of run time after a rebuild, guarding against heat build-up and wear during break-in and the initial drain.
What is this fluid made from?
It is developed from ultra-pure base oils that resist viscosity breakdown.

