Seems we have differing opinions. Got an 85, runs quite well with 138K on it. I want to do the treatment, but now I'm confused as to which to use, ATF or MMO.

I'm tempted to us a little of both, CYA.

atf is fine. been doingit for years.

MMO is not as harsh on plugs and o2 sensor as atf. Besides, I have my doubts about how well it can "burn off" carbon. It's good to temporarily raise compression after flooding. I have been using mmo for years on many cars and it is a good product.

what is MMO? i used ATF, but i haven't herd of MMO

thanx

steve

i would go atf,



i have a complete write up on it at the rx7club forums,



do you have cats on your car?



if so i would do it before an exhaust upgrade.



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