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MTF OCI #4586778
11/27/17 05:05 PM
11/27/17 05:05 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP

Joined: Aug 2016
Posts: 19
North Carolina
Whatís the general thought for a change interval on a manual transmission ? My 2010 Lanceís warranty book says 2 years/ 30,000 mile (48,000 km). Iím convinced this is for the automatic, which shares the same warranty book. The last time I changed it the fluid looked brand new, I replaced it with Redline MTL. Iím coming up on the change interval and am wondering if changing it again is a waste of time. Thanks.

Re: MTF OCI [Re: Kev994] #4586829
11/27/17 06:26 PM
11/27/17 06:26 PM
Joined: May 2002
Posts: 3,293
Bolivia
widman Offline
widman  Offline

Joined: May 2002
Posts: 3,293
Bolivia
On synthetic GL-4+ fluids, I recommend 50,000 km. Beyond that you really don't know how much dirt, wear materials, or whatever is circulating. Since it is only 2 or 3 its, no big deal.

For anyone still using the old formulas, I would change out as soon as possible.

Re: MTF OCI [Re: Kev994] #4586834
11/27/17 06:32 PM
11/27/17 06:32 PM
Joined: Sep 2004
Posts: 22,367
Central Florida
Mr Nice Offline
Mr Nice  Offline

Joined: Sep 2004
Posts: 22,367
Central Florida
You'll notice smoother shift with new MTF.

On my Honda and Acura I change MTF max 40K miles.

Re: MTF OCI [Re: Kev994] #4586846
11/27/17 06:54 PM
11/27/17 06:54 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP

Joined: Aug 2016
Posts: 19
North Carolina
Thanks for the input. I did notice it shifted better the last time I changed it, I had just assumed that was the switch from Diaqueen to Redline. It only takes 3 qts, so I guess for $50 I may as well. The spec is for GL3 but the Redline I put in is GL4.

Re: MTF OCI [Re: Kev994] #4586850
11/27/17 06:58 PM
11/27/17 06:58 PM
Joined: Dec 2002
Posts: 42,625
New Jersey
JHZR2 Offline
Global Moderator
JHZR2  Offline
Global Moderator

Joined: Dec 2002
Posts: 42,625
New Jersey
I generally changed when shift feel degraded.

In my E30 with redline, it was repeatable. When I went to Amsoil the feeling didn't change. I'd wait until you feel a change, then fill with Amsoil MTF.

Re: MTF OCI [Re: Kev994] #4586864
11/27/17 07:10 PM
11/27/17 07:10 PM
Joined: Mar 2008
Posts: 7,906
USA
slacktide_bitog Offline
slacktide_bitog  Offline

Joined: Mar 2008
Posts: 7,906
USA
Most manual transmissions never require a fluid change. Manual transmissions don't get as hot as automatic transmissions.

The only mfr I know of that specifies a MTF change is Honda, but their MTF is basically motor oil, and in fact, they used to specify just motor oil until they made their own MTF in 1996, and even then they say motor oil can be used as an alternative.

A few cars say to replace the fluid around 8000 miles, then never again.

Re: MTF OCI [Re: Kev994] #4586891
11/27/17 07:39 PM
11/27/17 07:39 PM
Joined: Nov 2011
Posts: 1,471
Lyndhurst NJ
Audios Offline
Audios  Offline

Joined: Nov 2011
Posts: 1,471
Lyndhurst NJ
Id recommend every 40k or so, but usually we sell it with spark plugs, air filter fuel filter etc.


2002 VW Golf TDI-Mobil 1 5/40 TDT
2007 Mercedes GL320 CDI- M1 0/30 ESP
2005 BMW M3 BMW Twin Power 10/60
2003 BMW M5-Fuchs 5/40
1998 BMW M3/4/5 Fuchs 5/40
Re: MTF OCI [Re: Kev994] #4586995
11/27/17 09:11 PM
11/27/17 09:11 PM
Joined: Dec 2016
Posts: 128
NC
ruhroh Offline
ruhroh  Offline

Joined: Dec 2016
Posts: 128
NC
I've no idea but the last time I changed the fluid, merc/dex3, it was about as dark as an auto transmission's fluid after around similar mileage (40K). It also washed out some small specks of metal, which I'm guessing is from the synchros. Then again, mine uses ATF and not gear oil and I just use the cheapest merc/d3 I could find. My owner's manual doesn't specify manual transmission fluid change; it only tells the owner to check that it's at proper level by pulling the fill plug. I'd still change it on a periodic basis though.

I couldn't tell any improvements in shift quality after a fluid change, to be honest.

Re: MTF OCI [Re: Kev994] #4587003
11/27/17 09:17 PM
11/27/17 09:17 PM
Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
50K has always been my # if filled with MTL. That is one fine lube. It cures all sorts of bad shifting issues smile


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: MTF OCI [Re: ruhroh] #4587031
11/27/17 09:49 PM
11/27/17 09:49 PM
Joined: Dec 2016
Posts: 8,017
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,017
Waco, TX
Originally Posted By: ruhroh
It also washed out some small specks of metal,

I couldn't tell any improvements in shift quality after a fluid change, to be honest.


I change it every 10,000-20,000 just to get the flecks out (I do a lot of towing)

I DON'T TOSS IT, THOUGH.....

It goes back in the bottles so the grit settles to the bottom...
and then goes right back in again on the next change.
You'd be surprised what settles out!


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: MTF OCI [Re: Kev994] #4587076
11/27/17 10:56 PM
11/27/17 10:56 PM
Joined: Mar 2012
Posts: 1,456
San Antonio, TX
E150GT Offline
E150GT  Offline

Joined: Mar 2012
Posts: 1,456
San Antonio, TX
i changed the fluid in my truck for the first time at 240k. What was originally red ATF came out black. Didnt really make a difference in shifting. Ive never changed any of the fluid in my FWD mazdas, although I probably will at 50k which is coming up real soon.


1984 Mercedes-Benz 300SD - 100k
1995 F150 XL 4.9 reg cab 5MT - 251k 5w30
2016 Mazda6 Touring 6MT - 57k 10w30
2006 Buick Lucerne CXL 3.8 31k 5w30
Re: MTF OCI [Re: Kev994] #4587108
11/27/17 11:42 PM
11/27/17 11:42 PM
Joined: Nov 2008
Posts: 932
Oklahoma
CELICA_XX Offline
CELICA_XX  Offline

Joined: Nov 2008
Posts: 932
Oklahoma
I changed the fluid for the first time at 150k in my little ECHO commuter car with Amsoil MTG. No difference in shifting whatsoever.

Changed again at 200k (with more Amsoil) and the fluid still looked very good.

I don't think I'll change it again for a long time.


15 Toyota Prius - M1 EP 0w20 SN+
06 Acura MDX - Valv MaxLife Syn 5w20 SN+
02 Toyota ECHO - Valv MaxLife Syn 5w30 SN+
97 Lexus LX450 - M1 EP HM 5w30 SN+
93 Lexus LS400 - Valv MaxLife Syn 5w30
Re: MTF OCI [Re: slacktide_bitog] #4587141
11/28/17 01:25 AM
11/28/17 01:25 AM
Joined: Sep 2015
Posts: 2,559
Malaysia
zeng Offline
zeng  Offline

Joined: Sep 2015
Posts: 2,559
Malaysia
Originally Posted By: slacktide_bitog
Most manual transmissions never require a fluid change. Manual transmissions don't get as hot as automatic transmissions.

Why would it be so , as they have fewer components IINM ?
..... or sump volume matters ?

Last edited by zeng; 11/28/17 01:25 AM.
Re: MTF OCI [Re: Kev994] #4587161
11/28/17 03:15 AM
11/28/17 03:15 AM
Joined: Feb 2015
Posts: 2,595
Slovenia EU
Kamele0N Offline
Kamele0N  Offline

Joined: Feb 2015
Posts: 2,595
Slovenia EU
Generally all gearboxes (AT/MT) nowadays are "sealed for life"...

But since I personally dont belive in that nonsense...I am changing MT fluid @aprox 90kkms (AT fluids @aprox 60 kkms)


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: MTF OCI [Re: JHZR2] #4587869
11/28/17 06:58 PM
11/28/17 06:58 PM
Joined: Aug 2016
Posts: 19
North Carolina
Kev994 Offline OP
Kev994  Offline OP

Joined: Aug 2016
Posts: 19
North Carolina
Originally Posted By: JHZR2
I generally changed when shift feel degraded.

In my E30 with redline, it was repeatable. When I went to Amsoil the feeling didn't change. I'd wait until you feel a change, then fill with Amsoil MTF.

I struggle with the Amsoil MTF. Neither my Lancer nor my Outlander have recommended MTF or Gear Oil when using their vehicle recommendation tool. The Lancer calls for 75W80 GL-3. So the MTG should fit this, I canít figure out why it says ďno recommended Amsoil productĒ. The Outlander calls for 85 W and 90W GL5 so the severe gear 75w90 should work but I get the same message.

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