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#3228786 - 12/26/13 11:17 PM royal purple gear oil hard to shift when cold
macy1188 Offline


Registered: 12/26/13
Posts: 7
Loc: seattle, wa
Hi guys
so I have a 2012 Mazda speed three. Just replaced the transmission fluid with the 75w-90 two days ago.
for about 5 minutes when the engine is cold it is difficult to shift, it does not grind unless forced but it can be a pain to get into 2nd.
from what I have read it seems to be because the oil is heavier then the oem oil and needs to warm up in cold weather like the red line mt90.
Is this normal for these types of gear oils? supposedly it is for the redline
Does anyone else have to deal with this with RP, or respond? Is your tranny still ok

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#3228797 - 12/26/13 11:38 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
GutsyGecko Offline


Registered: 08/16/12
Posts: 420
Loc: Youngstown, OH
Almost all transmission that spec a gear oil fill be a bit stiff in the cold. I haven't had the problem in years due to using ATF in my last 3 manual trans. The problem should become a little les noticeable as the oil shears some.

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#3228799 - 12/26/13 11:47 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
Chris142 Offline


Registered: 06/05/03
Posts: 11453
Loc: apple valley, ca
What oil does the trans call for?
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#3228801 - 12/26/13 11:55 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
macy1188 Offline


Registered: 12/26/13
Posts: 7
Loc: seattle, wa
The transmission calls for gl4 75w-90 and the RP IS gl-4or 5 compatible.
thanks for the reply gutsygecko

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#3228803 - 12/26/13 11:59 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
Rand Offline


Registered: 08/20/03
Posts: 7749
Loc: Barberton,Ohio
the car calls for a lightweight 75w80 GL-4

if you put in RP 75w90 GL-5 that is your problem.

the extra additives in gl-5 will usually negatively affect syncho operation.
in addition to it being much thicker.

owners manual page 489 (section 10-4)



For the best shift feel I'd recommend Gl-4 only and the proper viscosity
such as
http://www.redlineoil.com/product.aspx?product=50204

Redline 75w80 GL-4 Transmission oil.
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#3228812 - 12/27/13 12:17 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
macy1188 Offline


Registered: 12/26/13
Posts: 7
Loc: seattle, wa
Thank you rand
I just went by what some in the Mazda forums have said. I will be switching it out first thing.

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#3228827 - 12/27/13 12:49 AM Re: royal purple gear oil hard to shift when cold [Re: GutsyGecko]
dparm Offline


Registered: 04/19/10
Posts: 12539
Loc: Chicago, IL
Originally Posted By: GutsyGecko
Almost all transmission that spec a gear oil fill be a bit stiff in the cold. I haven't had the problem in years due to using ATF in my last 3 manual trans. The problem should become a little les noticeable as the oil shears some.



Yep. A higher viscosity index fluid may help a tiny bit, but manual transmissions are always a bit clunky and sloppy when cold.
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#3228840 - 12/27/13 01:22 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
macy1188 Offline


Registered: 12/26/13
Posts: 7
Loc: seattle, wa
Probably a good idea to stay away from the Gl4-5 combo stuff? Now do people run the 75w-90 do to better performance when hot then and just deal with the scrappy shifting when the engine is cold? Doesn't make sense to me seems like the 75w-80 would be best all around unless your going to the track or something.

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#3228845 - 12/27/13 01:44 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
Olas Online   content


Registered: 12/11/13
Posts: 616
Loc: Manchester, England
If Mazda call for a 75w90, stick with that grade. They spent millions in R&D and they know what fluid their gearbox needs!

IMO, the very best 75w90 on the market that meets GL4 is this stuff here (two links included depending on wether you have an open diff or a LSD)

http://www.opieoils.co.uk/p-60230-miller...ission-oil.aspx
(above link is the open diff version)

or

http://www.opieoils.co.uk/p-60232-miller...ission-oil.aspx
(this link is the same stuff but for use with LSD)

I use it, it's silky smooth hot or cold! I've used a lot of different gear oils in 75w90 and nothing has ever come close to the Night-and-Day difference in smoothness when cold AND hot that I've experienced with this stuff.

Millers have a customer for life smile
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#3228851 - 12/27/13 02:06 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
Olas Online   content


Registered: 12/11/13
Posts: 616
Loc: Manchester, England
oops! i re-read and saw that they need a 75w80, in which case MTL is the daddy!
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#3228860 - 12/27/13 03:10 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
michaelluscher Offline


Registered: 10/07/12
Posts: 1323
Loc: NYC
How about GM FM'ed Syncromesh fluid?
The general consensus seem's to be MTX +GM FM Syncro fluid = thumbsup

Put that [censored] in everything
Shop local GM dealers for pricing though...
Amazon
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#3228930 - 12/27/13 06:55 AM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
Cujet Offline


Registered: 02/15/03
Posts: 4177
Loc: Jupiter, Florida
I use Redline http://www.redlineoil.com/product.aspx?pid=45&pcid=7 fluid in my Jag X-Type. It's the proper spec fluid and works quite well. It's also a good choice for your Mazda.

In fact, my trans has been 100% trouble free, something that other jag X-Type owners cannot say (those that don't change fluids regularly)

It shifts better than the other fluids I've tried. Hot or cold.

Check this out:

http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3228789/Gear_Oil_study While it does not directly apply, it does show the oil you used as being extremely out of grade when cold.


Edited by Cujet (12/27/13 07:04 AM)
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#3229158 - 12/27/13 01:21 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
camelCase Offline


Registered: 07/11/13
Posts: 168
Loc: Southeastern, USA
Fellow MS3 owner here - 2008 with over 120,000 miles.

Royal purple fluid is garbage.


Go with Redline if you can. Otherwise pick up some syncromesh. The manual in the MS3 can run ATF fluid all day with no problems.

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#3229166 - 12/27/13 01:38 PM Re: royal purple gear oil hard to shift when cold [Re: camelCase]
Rand Offline


Registered: 08/20/03
Posts: 7749
Loc: Barberton,Ohio
Originally Posted By: camelCase
Fellow MS3 owner here - 2008 with over 120,000 miles.

Royal purple fluid is garbage.


Go with Redline if you can. Otherwise pick up some syncromesh. The manual in the MS3 can run ATF fluid all day with no problems.


The redline recommendation is not their d4 or d6 atf, but their GL-4 MTL 75w80.
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#3229223 - 12/27/13 02:59 PM Re: royal purple gear oil hard to shift when cold [Re: macy1188]
dparm Offline


Registered: 04/19/10
Posts: 12539
Loc: Chicago, IL
Originally Posted By: macy1188
Probably a good idea to stay away from the Gl4-5 combo stuff? Now do people run the 75w-90 do to better performance when hot then and just deal with the scrappy shifting when the engine is cold? Doesn't make sense to me seems like the 75w-80 would be best all around unless your going to the track or something.


There is no reason to avoid a dual-rated GL-4/GL-5 fluid. There are many good ones such as Motul Gear 300.
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