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Honda vs. Synthetic Transmission fluid for Automatic

 
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Old 12-17-2013, 11:04 AM
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Honda vs. Synthetic Transmission fluid for Automatic

I want to clarify a couple things: (I own a 97 Prelude 4spd auto with 83,000 miles)
1) what is best for my transmission and it's longevity; standard or synthetic Trans fluid?

2) is it better to drain and refill or hook up to machine and flush when changing fluid?

I have yet to get any decisive answers for these questions from mechanics or the Honda Dealer. I'm okay with spending the extra cash if I know it will benefit the transmission... Any thoughts to my two concerns above?
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Old 12-17-2013, 11:27 AM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Idk but I don't think mine has ever been changed. I want too, but am a bit nervous about it. From what I herd, flush and replace with Honda Tranny fluid. Mind you I have 206K miles on my auto
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Old 12-17-2013, 04:16 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Folks used to say don't change a thing until it's black. These days owners manuals say like 35-50k miles or there abouts. Apparently there's a need to keep fresh fluid to keep it running cooler.
And it seems the Honda trannys in certain models have less than favorable lifespans.

Honda has done a good job at formulating their fluids and there should be no issues devdloping in your tranny by using Honda fluid.

A while ago there was some discussion about what fails and corrective measures by some auto tranny fixers. But they faded into the background.
Have you checked over at Honda-Tech? Maybe there is some discussion there since many an Accord suffers the same fate of auto tranny failure.

Me? I'd drain it and keep the old floaters within the transmission in hopes they are filling in gaps that a flush would exploit, and have a new filter installed. I'd use Honda fluid. But that's me. I'm from the 'don't change it 'til it's black' school.
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Old 12-17-2013, 07:29 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Honda/Acura atf sauce please. Flush and fill with every timing belt change. (Which means you're due at 83,xxx miles.)

Sidenote: stop using the + and - on the floor shifter, that will put your transmission in an early grave.
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Old 12-17-2013, 08:01 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Quote:
Originally Posted by bykfixer View Post
Folks used to say don't change a thing until it's black.
The auto transmissions that are in Preludes, Civics and other Hondas have non serviceable internal filters that are only accessible if you take apart the tranny to rebuild. So if you run that fluid until it's "black" you'll just end up clogging that filter and killing your transmission, that's what happened to my sisters transmission in her Civic.
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Old 12-18-2013, 02:14 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Quote:
Originally Posted by Khafre3 View Post
I want to clarify a couple things: (I own a 97 Prelude 4spd auto with 83,000 miles)
1) what is best for my transmission and it's longevity; standard or synthetic Trans fluid?

2) is it better to drain and refill or hook up to machine and flush when changing fluid?

I have yet to get any decisive answers for these questions from mechanics or the Honda Dealer. I'm okay with spending the extra cash if I know it will benefit the transmission... Any thoughts to my two concerns above?
Use Honda Tranny fluid. It's all synthetic now, ATF DW1.

Drain and fill only, no flushing with a machine. If you like to get most of the old fluid out, do a drain and fill 3X, drive abit inbetween changes, 100miles is fine.

I posted this elsewhere alittle while ago. (copy and paste)

1. A tranny cooler isn't always the best thing to add, it depends on the weather conditions in your area, if the weather is constantly hot, it may be a good idea, if it's hot and cold, then I wouldn't bother.

2. I'd advise anyone who has an Auto to get the cooler lines flushed, this will give you an indication of how much clutch material may/may not be running through your tranny, the magnetic drain bolt doesn't pick up everything.

3. If you do decide to flush the cooler lines now would be a great time to add a Inline tranny filter, I searched this site and was astonished that no one has posted about The Magnefine Tranny/Power steering filter, IT'S MADE IN AUSTRALIA. Has both a paper cone inside it along with a magnet. You'll be amazed what it catches.

4. Keep up with your fuid changes, definately don't go by what Honda suggests. Consider what your driving habits are, if you drive 80% city and 20% highway, your fluid won't last as long but if your driving 80% highway and 20% city, your fluid should last longer. I change my fluid every 8 months or every 2 oil changes, I change my engine oil every 4000km.

5. Keep your solenoids free of any debree, once a year remove them and give them a good cleaning. There's 6 in total:
lockup/shift control Solenoid A- (one assembly/2 solenoids) there's a screen/gasket that you can clean, similar to the IATV, you can also test it using your 12volt car battery.
Shift Control Solenoid B- test it.
Shift Control Solenoid C- test it.
A/T Clutch Pressure Control Solenoid A/B- (one assembly/2 solenoids) In my opinion, probably the most important of all of them, they have 3 small pipes that allow fluid to pass through which inturn, allow 2 vavles to move back and forth. The pipes have tiny screens on them, if they're blocked up the fluid can't pass as easily through them in order to move the 2 valves back and forth, this will definately cause flarring and slipping when shifting gears. They can also be tested after cleaned.

6. Check/test the 2nd Clutch Pressure Switch.

To sum things up, we all know Honda screwed up, any Honda/Accura years 1997-2005 probably had tranny problems. Adding an inline external filter would've probably solved many problems (many newer Honda vehicles now have an external serviceable AT filter) along with more frequent ATF changes, maybe even adding an external cooler from day 1.

In my case because I change the fluid often, I can do 3 drain and fills within a few days, driving 10 miles inbetween changes or drain the sump out and then drain the converter all in one change.

Quote:
Originally Posted by Lazarky View Post
Idk but I don't think mine has ever been changed. I want too, but am a bit nervous about it. From what I herd, flush and replace with Honda Tranny fluid. Mind you I have 206K miles on my auto
You mean, Drain and fill.

Quote:
Originally Posted by bykfixer View Post
Folks used to say don't change a thing until it's black. These days owners manuals say like 35-50k miles or there abouts. Apparently there's a need to keep fresh fluid to keep it running cooler.
And it seems the Honda trannys in certain models have less than favorable lifespans.

Honda has done a good job at formulating their fluids and there should be no issues devdloping in your tranny by using Honda fluid.

A while ago there was some discussion about what fails and corrective measures by some auto tranny fixers. But they faded into the background.
Have you checked over at Honda-Tech? Maybe there is some discussion there since many an Accord suffers the same fate of auto tranny failure.

Me? I'd drain it and keep the old floaters within the transmission in hopes they are filling in gaps that a flush would exploit, and have a new filter installed. I'd use Honda fluid. But that's me. I'm from the 'don't change it 'til it's black' school.
No servicable external filter, if you wait until it's dark, most likely you'll have a clogged internal filter, clogged solenoids screens/pipes, clutch material floating around, etc.

Quote:
Originally Posted by Sideswipe SI View Post
Honda/Acura atf sauce please. Flush and fill with every timing belt change. (Which means you're due at 83,xxx miles.)

No flushing.

Sidenote: stop using the + and - on the floor shifter, that will put your transmission in an early grave.
Not true, I use mine when upshifting but not when downshifting, car does that for me. If your shifting every gear at 4000rpm+, then I'd agree but shifting up in the 2200-2700rpm range will not shorten the life of a 5th gen Lude

Quote:
Originally Posted by 01PreludeBlue View Post
The auto transmissions that are in Preludes, Civics and other Hondas have non serviceable internal filters that are only accessible if you take apart the tranny to rebuild. So if you run that fluid until it's "black" you'll just end up clogging that filter and killing your transmission, that's what happened to my sisters transmission in her Civic.
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Old 12-18-2013, 05:40 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Well what's the point? 2700 rpm isn't anywhere remotely close to VTEC, so why force the auto to chew itself? The temptation to drive it stolen is sooooo there, that's why I said in general, don't use it. If the previous owner already beat the tranny, then what little you do will still damage it.
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SURGEON GENERAL WARNING:
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Old 12-18-2013, 07:18 PM
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Re: Honda vs. Synthetic Transmission fluid for Automatic

Quote:
Originally Posted by bykfixer View Post
Folks used to say don't change a thing until it's black. These days owners manuals say like 35-50k miles or there abouts. Apparently there's a need to keep fresh fluid to keep it running cooler.

Me? I'd drain it and keep the old floaters within the transmission in hopes they are filling in gaps that a flush would exploit, and have a new filter installed. I'd use Honda fluid. But that's me. I'm from the 'don't change it 'til it's black' school.
^^^
Maybe that will help....
I repeat, I'd have a new filter installed. Realizing they are "non servicable" if my oil was darkened.
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Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

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Last edited by bykfixer; 12-18-2013 at 07:23 PM.
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