[rx4ur7]

Damn I can't (well yes I can) believe how cheap you guys are. Spend all this time and effort to try and save a buck if that. I would think your time is worth more. (just busting)

Call Ray and get the sensor 8553-15-610A and gasket 8553-15-611, you are not going to have to worry about it ever again, unless someone overtightens it or breaks the wire off.

Cheap insurance. They have saved many of my customers costly motor jobs over the years. I don't want to have do a motor until it serves a good long time.

That sensor is the earliest warning system that tells you something is going wrong. In the FC3S when it starts going off out of nowhere it is usually giving an indication of the beginning of a housing seal failure.

Both rubber mount points are valid. I prefer rubber mounts. Mazda has used solid mount for so many years 74 to 85. On the point of electrolysis, is long as all of the grounds, wiring and electronic components are good that should be negligible. It will add some protection but if there is any electrical problem it will look to find a ground where ever it can.