Thank you for the detail, I like the data. I'm more of a spreadsheet guy (finance) and trying to learn cars a bit to better maintain them. It seems that Bosch is thinner (which helps with better fluidity?) and a longer life. It is a bit better? Is Bosch DOT 5.1 ?
Yes, Bosch ESI6 is DOT 5.1. The slightly thinner viscosity compared to Motul 5.1 won't make a difference in practice. However, the Bosch is readily available from RockAuto and at a very good price if you are already getting other parts shipped from there
https://www.rockauto.com/en/moreinfo.php?pk=11727065&cc=0&pt=11389&jsn=408