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DIY: Transmission and Differential fluid replacement

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Old 12-05-2008, 07:57 PM
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Walmart has the pump needed for this job in the outboard motor lower unit oil area.I
f you have the car on ramps there is no problems pumping in the oil, If you do you is a wimp!!!!
Put the F$#%$#^$#^#%^#%^ing washers back on the plugs and tighten the **** up!@!!!!
This ain't the Space shuttle folks, if you tighten the damn plug it should not leak.
Old 12-13-2008, 02:36 PM
  #227  
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Those with AT...

I noticed some folks are posting about what oil to use for AT. This rx-8 (06+) uses a similar type Aisin tranny as the Mazda6 6spd AT.
The tranny oil is Type-IV. As such it is critical to not use Mercon-V or anything else for this AT.
You can get this fluid from Toyota (Type-IV) or Mobil 1 JWS3309.
For more info see http://forum.mazda6club.com/index.php?showtopic=24510
Old 12-15-2008, 01:46 AM
  #228  
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Thanks to everyone who put there threads online I did my 2 fluid changes within 1hour. the only problem I had was I used a milk jug and not a soda bottle for the 2oils. So the pump I used said any gallon including milk containers but I didn't so I had to pump and hold the pump together in the jug but all in all it work just fine. no mess. Thanks again for everything, you guys rock. RX-8 Club is the best.
Old 12-15-2008, 01:50 AM
  #229  
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Yeah, its NOT that hard. Just like a regular oil change with the filter.
Old 02-15-2009, 05:06 PM
  #230  
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Changed out my 6MT and read diff fluid today. Very straight forward and easy. Used the ramps on the inclined driveway idea.

Around page 7 someone mentioned they used a 22mm socket for everything. On my '06 RX-8, I needed a 24mm socket (15/16ths).
Old 02-18-2009, 07:42 PM
  #231  
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Did my Trans (Manual 6 Speed) and Diff at 4000KM (2400Miles) a few days ago with Redline MT90 and 75W90 Gear Oil for Diff.

I can't get over the difference, bloody beautiful!, the changes are so smooth, no knotchiness, no 2nd gear lockout (when Cold).

And this is something I did not believe from others the car is quieter, smoother, funtastic!

Highly recommend this one!

Series II RX-8's

Transmission takes a 24mm (15/16th) socket, fill and drain plugs.
Differential Takes same 24mm for Drain, and a 23mm Ring spanner for FILL, as you cant fit a socket and wrench on the fill plug. (not enough room)

Ash
Old 02-20-2009, 02:07 AM
  #232  
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Angry

went to the dealer to get my service done.. I also got them to change the diff and transmittion oil while they were at it...

I supplied 2 x Redline MT90 and 2 x redline 75w90 diff oil..
The stuipid idiots manage to put 1 x MT90 and 1 x 75w90 into the diff and
1 x MT90 and 1 x 75w90 into the transmittion how stupid is that....how can you mix the 2 different oils up?? read the bloody label

Is this going to be a problem? im getting the fluids drained and replaced in 3 days time...
Old 02-20-2009, 02:41 AM
  #233  
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Originally Posted by Henley
went to the dealer to get my service done.. I also got them to change the diff and transmittion oil while they were at it...

I supplied 2 x Redline MT90 and 2 x redline 75w90 diff oil..
The stuipid idiots manage to put 1 x MT90 and 1 x 75w90 into the diff and
1 x MT90 and 1 x 75w90 into the transmittion how stupid is that....how can you mix the 2 different oils up?? read the bloody label

Is this going to be a problem? im getting the fluids drained and replaced in 3 days time...
OMG mate, What bloody idiots...

Sounds like your dealership also employs Lawn-mower Mechanic to work on Mazda's...

How and the hell does anyone get that wrong?
Does the guy have a IQ Bigger than his/her shoe size or not?

YES, Get it out...

There may not be an issue, but I recall reading that 75W90 in the transmission is too slippery and you could have synchro changing problems, like not engaging correctly or crunching...
But, because they have been diluted I don't think you will have a problem in the mean time......

UNBELIEVABLE!!!

3 Days time will be OK, I would think..

Hope his Helps...
ASH
Old 02-20-2009, 02:44 AM
  #234  
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Originally Posted by Henley
went to the dealer to get my service done.. I also got them to change the diff and transmittion oil while they were at it...

I supplied 2 x Redline MT90 and 2 x redline 75w90 diff oil..
The stuipid idiots manage to put 1 x MT90 and 1 x 75w90 into the diff and
1 x MT90 and 1 x 75w90 into the transmittion how stupid is that....how can you mix the 2 different oils up?? read the bloody label

Is this going to be a problem? im getting the fluids drained and replaced in 3 days time...
I just noticed you are from Adelaide, like me, I live at Seaford..

Who was the Dealer, Paradise, Australian, let me guess City Mazda?

Where did you buy your Redline from?
Old 02-20-2009, 03:05 AM
  #235  
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Hi mate...

I thought that Paradise motors would have been a sure bet because i heard so many bad stories about the other dealers and not them ...

BUT I have been getting my car serviced at Paradise Motors and they stuffed up... they didnt even give me the spare rotary oil and the service department tried to cover the mistake up by lying to me... So disappointing...

I got my oil from www.performancelub.com.. they are in QLD and the guy's name is Harold... ordered the oil and spark plugs from him and they arrived pretty quickly.. he's pretty good...
Old 02-20-2009, 03:16 AM
  #236  
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Wow, Paradise...they are usually the best, and lying? Reg and David Neale owners are Christians!, they would not lie!

I nearly bought my 8 there in November 08, but the guy was only half interested and wanted me to sign the deal with my offer first, then the old, the boss won't agree, you have to give us more to work with..they lost out, I went to Australian, did not want to, but got the best deal.

The Salesman is a Mazda NUT!!, he sells more Mazda's than anyone else in Adelaide and one of the best in Australia, he's been work there for 15 years and never had a Holiday!
Old 02-20-2009, 03:54 AM
  #237  
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its a shame then that the owners of the dealership don't work in the service department ...congrats on the car.. looks great...

Last edited by Henley; 02-20-2009 at 03:57 AM.
Old 02-21-2009, 07:27 PM
  #238  
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So I just changed my transmission and differential fluid today with Royal Purple Max Gear 75w-90. I was always a little skeptical about performance increase claims just from fluid change, but the car now drives smoother, quieter with what seems to be faster acceleration. The shifting doesn't really feel any different (always been smooth for me anyways) but again the whole car just feels faster and overall better.............less mechanical resistance perhaps?!?!
Old 02-21-2009, 10:55 PM
  #239  
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Tranny Overfill?

I replaced my tranny and rear diff fluids today. The DIY says 1.8 quarts for the tranny, but I put a full 2 quarts in. I am wondering if this is ok?
Old 03-18-2009, 03:01 PM
  #240  
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Originally Posted by turbine
I found the best way to fill it was with a long clear tube. I just popped the hood and ran it down beside the oil filter. From underneath, grab it and put it into the top hole. From the engine bay, fill the oil. On the differential, just loop it over the coilovers down to the fill hole. You can fill it above the tire.
Pretty decent idea.

About to hit 30k on original fluids. I'll be doing this soon and post up my thoughts.
Old 03-18-2009, 06:21 PM
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Originally Posted by wankelhead
I replaced my tranny and rear diff fluids today. The DIY says 1.8 quarts for the tranny, but I put a full 2 quarts in. I am wondering if this is ok?

As long as you were able to get the majority of it out during the draining 2 quarts fit fine.

I personally like filling by taking the shifter out and dumping into the transmission. Then regreasing the shifter cup.
Old 03-25-2009, 11:01 AM
  #242  
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Originally Posted by 4 years to Supercharge
.....regreasing the shifter cup.
Okay now you got me interested.

I recently replaced my trans fluid and was hoping that shifting gears won't be as crunchy. To my surprise it still feels crunchy even when I replaced the trans fluid. Will regreasing the shifter cup fix that?
Old 03-25-2009, 05:59 PM
  #243  
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Originally Posted by firebirdude
About to hit 30k on original fluids. I'll be doing this soon and post up my thoughts.
Just completed the fluid change out yesterday. Drove a good amount today. Shifts are defiantly smoother. Nothing insane, but about what I expected. Totally worth the $40 in fluids between the trans and diff. If for nothing else, piece of mind that I now have a higher quality full synthetic fluid protection.
Old 03-25-2009, 10:24 PM
  #244  
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Originally Posted by camelicax
So I just changed my transmission and differential fluid today with Royal Purple Max Gear 75w-90.
Poor choice. You shouldn't use any GL-5 fluids in the transmission. It'll eat away at the transmission. The early users of Max Gear in the transmission found out the hard way and fortunately have warned the rest of us.

Stick with Redline or Amsoil GL-4 products.

I bought Amsoil and am going to put it in within the next month or so.
Old 03-26-2009, 06:49 PM
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Originally Posted by Proxi
Okay now you got me interested.

I recently replaced my trans fluid and was hoping that shifting gears won't be as crunchy. To my surprise it still feels crunchy even when I replaced the trans fluid. Will regreasing the shifter cup fix that?
It may help a little bit if the cup is sticking.

In the shop manual it is shown as a grease point.

The fluid may take a little time to get the full effect.
Old 04-16-2009, 03:45 PM
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Originally Posted by Guy Hollywood
Yes, it definitely is. They're called crush washers. When you torque the plugs, it crushes the washer and forms a tight seal. Using the same ones won't get you a proper seal and may cause leaks because the washer has already been crushed to most of its potential. They should only be a few bucks each at your Mazda dealer. And they should usually have them in stock because they perform this kind of maintenance on cars probably daily.
I went to order the crush washers from a Mazda Dealership, and they quoted me a total of $22 for 4 of them (2-at $7.00 and 2-at $4). I thought that was ridiculous, so I discussed with Summit Racing and Auto Zone. I gave them crush washer part # 9956-41-800, and also mentioned I thought they were 18mm (inner diameter). Neither place could match the part number up with generic items.

Has anyone had success sourcing these washers from any place other than a Mazda Dealership?

(such a frustrating problem to have)
Old 04-16-2009, 04:03 PM
  #247  
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Originally Posted by ngill33
I went to order the crush washers from a Mazda Dealership, and they quoted me a total of $22 for 4 of them (2-at $7.00 and 2-at $4). I thought that was ridiculous, so I discussed with Summit Racing and Auto Zone. I gave them crush washer part # 9956-41-800, and also mentioned I thought they were 18mm (inner diameter). Neither place could match the part number up with generic items.

Has anyone had success sourcing these washers from any place other than a Mazda Dealership?

(such a frustrating problem to have)
this place has 'em: http://www.finishlineperformance.com/store/home.php
Old 04-16-2009, 04:47 PM
  #248  
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Finishline rocks...

OnlineMazdaparts.com is also a great place! (over $100 gets free shipping most of the time... some parts excluded)

http://www.trademotion.com/partlocat...&siteid=214264

...do a search for the part number::::

Which are both dealerships...

Last edited by BoosTED; 04-16-2009 at 04:50 PM.
Old 04-16-2009, 04:51 PM
  #249  
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i went to order the crush washers from a mazda dealership, and they quoted me a total of $22 for 4 of them (2-at $7.00 and 2-at $4). I thought that was ridiculous, so i discussed with summit racing and auto zone. I gave them crush washer part # 9956-41-800, and also mentioned i thought they were 18mm (inner diameter). Neither place could match the part number up with generic items.

Has anyone had success sourcing these washers from any place other than a mazda dealership?

(such a frustrating problem to have)
Originally Posted by cajunrx8
put the f$#%$#^$#^#%^#%^ing washers back on the plugs and tighten the **** up!@!!!!
This ain't the space shuttle folks, if you tighten the damn plug it should not leak.
qft.
Old 04-16-2009, 06:55 PM
  #250  
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Originally Posted by CarAndDriver
Poor choice. You shouldn't use any GL-5 fluids in the transmission. It'll eat away at the transmission. The early users of Max Gear in the transmission found out the hard way and fortunately have warned the rest of us.
Congratulations, Captain Generality has spoken ... I get so f'ing tired addressing this lame BS
Attached Thumbnails DIY: Transmission and Differential fluid replacement-cluepon.jpg  

Last edited by TeamRX8; 04-16-2009 at 06:59 PM.


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