I've got a lot to unload here, bear with me...
First of all, kudos to Motive for their customer service. Emailed them around 9am, got the first response back 6 hrs later. And then the representative who was helping me was very responsive (usually responding within minutes).
Quick side note about Motive PNs - PNs that begin with a "1" refer to the adapter kit only. PNs that begin with a "0" refer to the kit that includes adapter + power bleeder. So, 0108 is the full kit, 1108 is just the adapter.
Regarding the proper brake bleeder selection, they said I should be using kit 0118 for my 2016 Fiesta ST. However, the only differences between the 0108 (recommended in this thread) and the 1118 are as follows:
- 0108 (1108) cap is plastic, 0118 (1118) cap is anodized aluminum.
- 0108 tabs are slightly longer than 0118. They had to shorten the 0118 tabs to fit Tesla.
- 0118 includes a longer (4 ft) hose.
Otherwise, the cap geometries are identical, and both kits include the same two gaskets. So in my case, it seems like switching to the 0118 wouldn't seem to help.
The rep also stated that in my photos, the tabs on my reservoir fill neck looked thin - can anyone else take a look at theirs and confirm whether mine look normal or not? Photos attached below.
Finally, I asked if I could stack two of the thinner gaskets, as that would result in a gasket thickness that is greater than the thick gasket, but thinner than the thin + thick gasket. Two different gasket thickness shown below (0.166 and 0.139 inches):
I'm not too hopeful this will be a good strategy though, because the distance between the sealing surface to the underside of the tab on the adapter cap is 0.254 inches (red arrow in photo below). Two thin gaskets stacked will be 0.278 inches, which means the gaskets will already be squeezed under the tab. Not sure they will compress enough to allow me to install the adapter cap onto the brake fluid reservoir when the gaskets are already squeezed in there so tight.
All that being said, Motive is sending me an extra thin gasket so I can try it out anyway. Once again, kudos to them for their customer service. Just wish the adapter would fit my car!