This is helpful and leads to more questions too. Like trying soaking the other injector in biodiesel. Too bad my fueling station ran out of B99.
I do not know the ingredients of MMO. It doesn't state on the bottle. All I can gather from the bottle and their website is that it has petro distillates. It has no silicone, no methanol and no sulfur.
It is compatible with biodiesel according to the FAQ's.

I'm looking at the glass bottle that has the MMO soaking the injector and the ring. The injector nose has a scant amount of carbon coming off of it. It has been soaking for 2 hours so far. I'll put the bottle inside the house now and return it to the patio in the morning. Should be about 65 F tomorrow. I'll do this for 3-4 days.
Should I fill the cylinder up with MMO, biodiesel, or Detron III ATF fluid?

Frankie

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Frankie
It never ends!
1985 300D Turbo 181K Anthracite grey, "SOPHIA"
1984 300 SD Turbo(sold)
2004 Subaru Forester XT,Cayenne red.