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20#
發表於 3-1-2011 23:34
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Hi Sammy-hing,
Sorry to bother you.
Could you please kindly explain the difference between HMMF & ATF-Z1.
Somebody said that "早期係用ATF,係原廠油黎 ... HMMF波箱油可替代 old model ATF-Z1波箱油, ATF ...
Patrick 發表於 3-1-2011 23:08 
But I won't said one is better than the other one, or either one can replace another one. Otherwise, Honda will just keep one of them, but not boh.
HMMF is made for Honda CVT for sure, and it is good for our Stepwgn which are with CVT.
And ATF-Z1 is made for Honda traditional transmission, and it is good for our Stepwgn with 4-Speed auto.
about the statement ATF-Z1 is good for the old Honda CVT.............The version I've heard is that when Honda CVT first came out, there was only 1 transmission oil, ATF-Z1 (HMMF was not exist), so that's the only choice for them at that time. After a few years, Honda has received alot CVT breakdown report, so they specially developed a new CVT transmission for their CVT which is HMMF. After HMMF came out to the market, all Honda CVT should use HMMF (new or old)
Due to the 2 oils' componds and viscosities are different, I won't say it is any good idea to use HMMF as ATF-Z1 since the working pressure and temperature of CVT and traditional auto transmission are different.
To ask me to use ATF-Z1 as HMMF or the other way around, it the same to ask me if I will use HMMF as engine oil to put into the engine....my answer is "NO". |
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