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Re: What is so special about Honda DW-1 fluid? [Re: 2civics] #3799515 07/23/15 05:48 PM
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Quakish Offline
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Originally Posted By: 2civics


DW1 is not synthetic in the U.S....that's it.


how do you know this? please share, thanks

Re: What is so special about Honda DW-1 fluid? [Re: 901Memphis] #3799738 07/23/15 11:22 PM
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David1 Offline
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Originally Posted By: 901Memphis
There are aftermarket fluids which can surpass the oem fluid but also plenty of fluids that aren't as good as oem. If he used a cheap mineral based dex/merc instead of the Honda fluid he would have problems, but Maxlife, Amsoil, Mobil 1 all make fine multi vehicle atfs.


For ATF Z1 MaxLife should be okay or at least it says so on the bottle.
However ATF DW-1 is differnet. It does not say that on the MaxLife Bottle.

The only ATF that says DW-`1 is the Honda DW-1 and the Castrol Multi Import ATF says
Recommended HONDA / ACURA ATF-Z1, ATF DW-1

I dunno why one would say recommended and the other says suitable.

even in my owners manual it says its suitable to use 10W30 Oil in the trans fluid.

and the Castrol Transmax Full Synthetic Multi-Vehicle ATF says Suitable for ATF-Z1, ATF DW-1,

Personally I say go with the REAL GENUINE HONDA APPROVED DW-1 even if your Honda was a around before DW-1 was around.

The owner of the shop is correct.

also power sterring ... I have heard that you can use the prestone stuff but it depends on your climate.. I have read very hot or very cold areas the Prestone Powersterring Fluid can give problem.

Even Advanced Auto has there own house brand of Honda / Acura Power Sterring Fluid and I dont use it.

I just drive to the Honda dealer and buy it.


I know some people get lucky with with MaxLife ATF...

however untill I see a car come from the factory that says prefill with Valvoline ATF / MaxLIFE ATF

I dont see why they wouldnt do it.... I mean GM puts Factory pre-filled with Mobil 1 on Corvettes and I know other cars say Factory pre filled with Castol Edge Syn got Engine Oil. So if aftermarket brands are so good how come they do use it?

Reason::: as one person said a transmission is different then a engine...
They Factory does all kinds of tests and simulations to figure out what ATF is the best and then they use that one...


Find 1 new car that says Factory fill Tranmission with any after market Trans Fluid.

I bet you cant find 1.


Last edited by David1; 07/23/15 11:26 PM.

2002 Honda Accord V6 3.0 Automatic Trans 250K Miles
Valvoline Maxx Life FULL SYN 5W30
HAMP or FULL Or HONDA Filtech A01s
Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3800072 07/24/15 10:47 AM
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One thing I learned about Honda and Toyota dealers and fluids. The price they quote to you over the phone is list. Often when you get to the shop you'll find the actual price is lower. They won't bargain over the phone in case you're corporate.

PITA I know, but it is what it is.


Various musings: http://hangfire.net
Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3800256 07/24/15 01:38 PM
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skaughtz Offline
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I have basically just relied on anecdotal evidence.

On my 2007 Camry, I use MaxLife. Around the internet but especially on toyotanation.com there are a lot of supporters for its replacement of Toyota T-IV and WS ATF (and quite a fair number of detractors of Toyota WS, too).

On my 2012 Civic I only use Honda DW-1. Maybe it is just superstition, but there are countless claims that anything other than Honda ATF (especially DW-1) can lead to problems. Power steering fluid and brake fluid, too. At $25 total for three quarts of ATF from my local dealership, for a drain and refill I would just rather not risk it. The extra couple of bucks spent helps me sleep better and is one less thing to worry about.


HonduD2: 2012 Civic LX - 61k - PP 0W-20 - Fram Ultra - Honda DW-1
Camryero: 2007 Camry LE - 91k - PPHM 5W-30 - Fram Ultra - Valvoline MaxLife ATF
Re: What is so special about Honda DW-1 fluid? [Re: skaughtz] #3800295 07/24/15 02:32 PM
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Sayjac Offline
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Originally Posted By: skaughtz
...On my 2012 Civic I only use Honda DW-1. Maybe it is just superstition, but there are countless claims that anything other than Honda ATF (especially DW-1) can lead to problems. .

I did that too with Z1 on the 01 Civic I referenced earlier for ~165k miles until Z1 was discontinued. Only did single d&f's too every 25-30k mi too. But when Honda dropped Z1, I went another route, MaxLife, on two Hondas and haven't looked back. 220k+ miles on the Civic is a substantial anecdote I'd say, especially considering Car Complaints AT rating on that year model. Having read this board regarding Z1 found it wasn't very special. Last time I tried Castrol IMV on the Civic and it too seems to be doing fine.

That said, I've got no problem with those that use and find peace of mind with DW1. And if I owned a Honda under manufacturers warranty I'd use it too, just so all the i's were dotted with any possible AT issue.

But I don't buy into the princess', use only Honda parts and fluids always as espoused on Honda specific forum(s) either. And why I take what's said in those with a grain of salt. My .02

Re: What is so special about Honda DW-1 fluid? [Re: Sayjac] #3800307 07/24/15 02:48 PM
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Originally Posted By: sayjac
But I don't buy into the princess', use only Honda parts and fluids always as espoused on Honda specific forum(s) either. And why I take what's said in those with a grain of salt. My .02

For critical and rarely failed parts such as clutch master & slave cylinders, clutch plate ... OEM parts are better than aftermarket, and since labor cost is very high in replacing those parts, try to save few dollars with aftermarket parts doesn't make sense.


'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis
Re: What is so special about Honda DW-1 fluid? [Re: HTSS_TR] #3800331 07/24/15 03:25 PM
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^^^^No doubt there are some parts used with labor intensive situations where OEM parts are preferable, including those mentioned. However, the princess' and "always" was more to the point of 'never' looking for aftermarket fluids or parts with solid aftermarket reputations.

Two examples I can think of with the Civic. Recent timing belt service, had I done it myself, I did the research and would have purchased Aisin water pump, Gates tensioner and timing belt and Gates or Bando drive belts. Turns out the Honda belt is Gates and drive belts used are Bando. And it would have been at significant savings from OEM.

Also used a BWD/Intermotor camshaft position/TDC sensor replacing the bad/worn oem in a diy job. Working like a champ.

So really what I was referring to was me not buying into the dogma preached in some forums that oem is always the only thing that should be used.

Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3800596 07/24/15 08:44 PM
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I noticed when looking around here lots of people say they have used Maxlife in honda applications and have been really happy. I have a 2005 Odyssey with 120k miles on it and was thinking of doing the 3x drain and fill with maxillae. Can anyone sound off as to how many miles they are running so far after switching to Maxlife?


2018 Honda Odyssey EXL

2015 Honda Accord

2008 Nissan Altima S
Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3800756 07/25/15 01:31 AM
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Meh, I'm going to use Amsoil's Fuel Efficient ATF soon for my '07 Fit. Who thinks I'm making a downgrade? smirk hide ???


92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup
Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3800820 07/25/15 05:59 AM
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Trav Offline
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I have been using Amsoil ATF (not the ATL) in Honda transmissions for years without issue.
I just did one that has had it in there for 100K and its still red and looks good. The PS fluid i use only the Honda stuff, they are finicky and pump failures are common enough but like VW seem much more common when non OEM fluid is used.

Just my observations.


ASE L1, Master. Deutsch Meisterbrief.
Re: What is so special about Honda DW-1 fluid? [Re: Sayjac] #3801089 07/25/15 12:26 PM
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Originally Posted By: sayjac
^^^^No doubt there are some parts used with labor intensive situations where OEM parts are preferable, including those mentioned. However, the princess' and "always" was more to the point of 'never' looking for aftermarket fluids or parts with solid aftermarket reputations.

Two examples I can think of with the Civic. Recent timing belt service, had I done it myself, I did the research and would have purchased Aisin water pump, Gates tensioner and timing belt and Gates or Bando drive belts. Turns out the Honda belt is Gates and drive belts used are Bando. And it would have been at significant savings from OEM.

Also used a BWD/Intermotor camshaft position/TDC sensor replacing the bad/worn oem in a diy job. Working like a champ.

So really what I was referring to was me not buying into the dogma preached in some forums that oem is always the only thing that should be used.

I agree.

Some critical parts with labor intensive are better with OEM, some other parts can be aftermarket.

Honda recommends OEM brake fluid but I use Preston DOT-3 brake fluid in my S2000 brake and clutch for more than 6-7 years without problem.

But there are parts that OEM is much better quality and lasted a long time such as air filter. My S2000 original air filter is still in good condition after 55k miles(I have pantyhose pre-filter), when I need to change it I will buy OEM filter for better quality. To me, $10-15 extra for OEM air filter that I change only 60-70k miles is worth it.

I bought some PCX-004 oil filters for my S2000 some years ago for $5-6/ea since it was the best oil filter for S2000. But I now have some Fram Ultra XG3593A filters because I think it is better than PCX-004.


'00 MB E430
'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
"Throwing food away is like stealing it from the poor and hungry" Pope Francis
Re: What is so special about Honda DW-1 fluid? [Re: Trav] #3802593 07/27/15 02:01 AM
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Originally Posted By: Trav
I have been using Amsoil ATF (not the ATL) in Honda transmissions for years without issue.
I just did one that has had it in there for 100K and its still red and looks good. The PS fluid i use only the Honda stuff, they are finicky and pump failures are common enough but like VW seem much more common when non OEM fluid is used.

Just my observations.


I'm hoping the ATL will perform well as a DW1 replacement in my Fit. Going to be installing by the end of summer hopefully.

I wonder if Red Line's D6 could be a better match or better ATF than Amsoil's ATL?

Amsoil's has a lower VI and pour point, but also a lower viscosity on the other hand. Both seem shear stable. D6 being slightly more heavy of a fluid.


92 Civic Hatch (stolen frown RIP)
07 Honda Fit Sport (A/T) WELCOME thumbsup
Re: What is so special about Honda DW-1 fluid? [Re: Quakish] #3802948 07/27/15 10:59 AM
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2civics Offline
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Originally Posted By: Quakish
Originally Posted By: 2civics


DW1 is not synthetic in the U.S....that's it.


how do you know this? please share, thanks


Other than talking to a service tech. from my Honda Service Department, and having it not be labled as synthetic in any manner.... just common knowledge among several civic and general Honda forums I happen to belong to. (8th Gen Civic and Honda's Civic forum) Notice you were the only one to challenge me on it. Again, common knowledge......I'm no genius. shrug

Last edited by 2civics; 07/27/15 11:04 AM.
Re: What is so special about Honda DW-1 fluid? [Re: stchman] #3802968 07/27/15 11:17 AM
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Canada has a version of DW1 that is synthetic and not recommended, from what I understand, for USA Hondas. Why? No idea. That is where the confusion comes in.

Cheers2

Last edited by 2civics; 07/27/15 11:21 AM.
Re: What is so special about Honda DW-1 fluid? [Re: 2civics] #3803303 07/27/15 05:18 PM
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Quakish Offline
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Originally Posted By: 2civics
Originally Posted By: Quakish
Originally Posted By: 2civics


DW1 is not synthetic in the U.S....that's it.


how do you know this? please share, thanks


Other than talking to a service tech. from my Honda Service Department, and having it not be labled as synthetic in any manner.... just common knowledge among several civic and general Honda forums I happen to belong to. (8th Gen Civic and Honda's Civic forum) Notice you were the only one to challenge me on it. Again, common knowledge......I'm no genius. shrug


not that i really care but it just seems this DW-1 is different in USA and Canada has never been proven, at least not that i've seen, but everyone talks about it so it must be fact. I called Idemitsu and asked and they told me it was the same fluid from the same factory. But they didn't give that to me in writing so who knows? Anyway, I guess until we see a virgin oil analysis of Canada DW-1 and US DW-1 no one will ever know the truth.

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