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03-03-2019, 02:19 PM | #1 |
Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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Grinding MT 1st gear only
Shifting down to 1st gear has just started to grind. No other gears grind up or down. Did a gear oil change with Mobil 1 75W90 about 6 months ago.
Syncro on 1st going? Clutch dragging? Shift linkage? Something else? Thanks. |
03-03-2019, 03:53 PM | #2 |
Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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Looks like the consensus is synthetic GL-5 lube is shit for Toyota MTs. Going to try swapping it out with some GL-4 Dino.
Last edited by 2bz; 03-03-2019 at 04:43 PM. |
03-04-2019, 01:26 AM | #3 |
Just make sure you go for the original Toyota 75W.
I tried Valvoline 75W90 GL4 (replacing the original oil after nearly 200tkm). It was OK but the gearbox started to grind occasionally and the shifting from 1 to 2 in cold weather (-10 Celsius) was hard. So after a year I changed it to Elf 75W80 (yes, 80 - recommended by Elf) GL4. Cold shifting problem is gone but slight grinding occurs now and then. I would say it is acceptable but next time I would definitely go for Toyota original oil. I have no problem with using non-Toyota liquids for engine oil or coolant or brakes (as long as they match the required specs) but this gearbox seems to be a real gourmet. Do not make the same mistake as I did and go for original oil directly. It costs a bit more but it is worth it! |
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03-04-2019, 07:24 AM | #4 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Mobil 1 synthetic transmission gear oil Yaris first gear grind synchro double clutch
Does this Yaris even have a first gear synchro? Very tight w/ whatever fluid was there when I got the car. Same way w/ Mobil 1 75/90. Wondered why the new Mobil 1 had a faint odor of that rank gear oil smell. Seems like a candidate for counterfeiting.
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03-04-2019, 10:04 AM | #5 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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Before I had my clutch type LSD I had good luck with Amsoil MTG, it was smoother than redline MT-90 that untried before it handled the cold really well. It is a proper GL-4 iirc.
The MTG wasn't a good fluid for my LSD so I now use Redline MT-85 and no grinding issues really, and it is a great fluid for a clutch type LSD. As others stated, stick with a proper GL4 and you should be fine
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No one ever wants to give a Yaris the point by... |
03-04-2019, 10:15 AM | #6 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Toyota Yaris manual transmission oil specification
2007 Owner's Manual for USA/Canada specifies API GL-4 or GL-5 w/ viscosity of SAE 75W-90
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03-04-2019, 10:37 AM | #7 |
Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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I bought CRC Sta-Lube GL-4 85W90 conventional (dino). Should be able to replace the Mobil 1 within the next few days.
Last edited by 2bz; 03-04-2019 at 11:16 AM. |
03-07-2019, 06:53 AM | #8 |
Drives: 2013 Yaris Sedan MT Join Date: Apr 2016
Location: Home
Posts: 4
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03-07-2019, 09:43 AM | #9 |
Drives: 05 Echo Join Date: Jul 2009
Location: Waterford Ontario
Posts: 131
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I'm surprised nobody here uses Synchromesh MTF. It's a GL4 and especially good for cold temperature and fuel economy applications, and it's fixed a bad 1-2 grind for me a number of times
https://www.pennzoil.com/en_ca/produ...2NhbGU9ZW5fY2E |
03-07-2019, 11:42 AM | #10 | |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
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Quote:
RoyalPurple was not better, and obviously the wrong type of oil. Drove it a while, then change it to Amsoil GL4. Transmission has been better since, but I still get the occasional grind shifting into 1st while not 100% stopped. But I'm still grinding shifting from 3rd to 5th when reving high. Sent from my CLT-L04 using Tapatalk |
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03-08-2019, 09:15 AM | #11 |
Drives: 05 Echo Join Date: Jul 2009
Location: Waterford Ontario
Posts: 131
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03-08-2019, 09:28 AM | #12 |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
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RP Synchromax? It's not the right oil for this transmission. It would grind shifting into 1st, and 3 4 and 5th high reving. Just go with proper oil and you shouldn't have problems.
Sent from my CLT-L04 using Tapatalk |
03-08-2019, 12:19 PM | #13 |
Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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Changed to Dino GL-4. No more grinding. Life is good.
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03-08-2019, 01:37 PM | #14 |
Yaris Hybrid Limited 2015
Drives: yaris Hybrid limited 2015 Join Date: Mar 2012
Location: Denmark
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Yaris Hybrid Limited 2015 C-HR 1,8 Hybrid premium 2020 |
03-08-2019, 02:57 PM | #15 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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Dino GL-4 for synchromesh
Will try to replicate. Why did you opt for the Dino brand of GL-4?
re: 2-1 grind w/ the Mobil 1--was this shift also quite stiff? (Mine takes too much push to happen, but there isn't an audible grind or bite felt in the shift lever.) |
03-08-2019, 04:59 PM | #16 |
Drives: 2008 Yaris 3DR Hatch MT Join Date: Dec 2018
Location: Harrisburg, PA
Posts: 80
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Dino as in dinosaur (conventional, not synthetic). It was CRC Sta-Lube gear oil. Yes, on the stiff. But I had grinding on 2>1 and occasionally 2>3. Nice and smooth all around now.
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03-08-2019, 08:48 PM | #17 |
Drives: 2007 2-door hatchback Join Date: Jul 2016
Location: USAnotCA
Posts: 750
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and, per your #7 post, 85w90 weight...which sould be a little thicker at low temperatures than the other oils mentioned in this thread.
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