Originally Posted By: HankYee
It was going to be used in the civic until it got totalled in an accident. I actually used some of the {MTF] fluid to top off my 1994 honda accord engine with 185k miles. No problems yet.
Proving, yet again, that you can run d*** near anything in a Honda engine!
However, Hank, as others have stated, what you're getting away with is not a good idea.
Nota bene: For those who may care, Honda owners manuals still state that "f Honda MTF is not available, you may use an SAE 10W-30 or 10-40 viscosity motor oil with the API Certification seal that says 'FOR GASOLINE ENGINES' {caps in original text) as a temporary replacement." The owners manuals go on to say: "However, motor oil does not contain the proper additives, and continued use can cause stiffer shifting. Replace as soon as convenient." Note there's no requirement to replace the stuff.
And, jfi, for those Honda cognescenti who are wondering what other MTF options may be out there, I can tell you from years of experimentation that either Honda Genuine MTF, part # 08798-9031, and Amsoil Synthetic Synchromesh Transmission Fluid or M1 5W-30 in a 50% mix works magnificently. Been running the stuff for years. The real benefits are realized in extremely cold weather when one discovers there's still no 2nd gear crunch.