A friend just acquired a relatively low mileage 1992 Honda Civic with an automatic, but it didn't include an owner's manual. Anybody know what kind of tranny fluid is spec'd for it?
Interesting. Another member looked at the ATF+3/+4 friction coefficients and speculated that it may be a good substitute for Z1.quote:
Originally posted by Max_Wander:
I use ATF+4 in our Honda transmissions. We've got a prelude H23A with over 300K on the original tranmission that has had ATF+3 and +4 in it. It very much likes it!
Well...if Z1 didn't exist in 1994, that would eliminate it as a possibility. But then again, Honda may have back spec'd it.quote:
Originally posted by thrace:
ATF Z1 did not exist in 1994 so it is hard to prove that ATF Z1 is the ideal ATF for a '94.
In case, you didn't see the thread a while ago, a member tried Mobil 1 Multi Vehicle ATF in their Honda, which was spec'ed for Z1. The Multi-Vehicle ATF was DexIII/Mercon-V/ATF+4 compatible. Shifts were extremely firm, and addition of Lubegard HFM supplement was needed.quote:
Originally posted by 427Z06:
Well...if Z1 didn't exist in 1994, that would eliminate it as a possibility. But then again, Honda may have back spec'd it.quote:
Originally posted by thrace:
ATF Z1 did not exist in 1994 so it is hard to prove that ATF Z1 is the ideal ATF for a '94.
According to gasguzzler, this vehicle is spec'd for Dex II/III.quote:
Originally posted by The Critic:
In case, you didn't see the thread a while ago, a member tried Mobil 1 Multi Vehicle ATF in their Honda, which was spec'ed for Z1.
This is a $1000 beater car. I don't see M1 AND Lubegard HFM supplement in it's future.quote:
Originally posted by The Critic:
The Multi-Vehicle ATF was DexIII/Mercon-V/ATF+4 compatible. Shifts were extremely firm, and addition of Lubegard HFM supplement was needed.
Site a qualified reference.quote:
Originally posted by The Critic:
Again, the friction modifiers used in ATF are selective and will only respond to a specific type of clutch material.
I'm not automatically assuming anything. That's why I wanted to know first what this particular transmission was spec'd for. Max_Wander then added that he successfully used ATF+3/+4 in a H23A1 engine/tranny which is from the 1992–1996 Prelude era. Add to that the reference that these 1992-95 Civic autos shift harshly as they age. And I read elsewhere, it was one of the reasons Honda developed Z1, as the spec'd Dex II/III would result in poor shifting qualities in these transmissions as they aged.quote:
Originally posted by The Critic:
My point is that you cannot assume an ATF+4 compatible fluid will automatically generate smoother shifts when installed into a unit that was not originally designed to accommodate a different fluid. In other words, not all "HFM" fluids are interchangeable.
Depending on whether or not you consider Tooslick to be a reputable source:
I looked through an updated version of the FSM (for 92-95 models) and it specs DexII or Honda Premium Fluid. I guess Honda did back spec the fluid requirement, although I don't know if Z1 is the same as the Premium fluid mentioned here. Anyone?quote:
Originally posted by gasguzzler:
Its spec'd for Dex II/III. I haven't heard about the back spec'ing part. Let me know if you need more information.