greenbaarron
Posts: 1
Joined: Thu Jul 12, 2018 2:00 pm
Delivery Date: 12 Jul 2011
Leaf Number: 009563

Re: How To: Reduction Gear Oil Change

Fri Aug 03, 2018 11:44 pm

Did this about a month ago@62k miles, the mi/kwh meter has increased from 4.7 to flopping between 5.0 and 5.1. About 950 miles into the fluid change w/ Redline D6. The before estimate was determined over the course of the month preceding. The power pulled from the wall as also decreased by the same. 2011 Leaf.
2011 Leaf - purchased at salvage auction in early 2017:
- Pizza pie tin covers, 2/3rds grill block, 39psi cold inflation on Ecopia 422s
- Vortex generators on the read deck lid
- 95% 2013 interior, a cesspool replacement

camasleaf
Posts: 644
Joined: Sun Sep 26, 2010 5:20 am
Delivery Date: 17 Jun 2011
Location: Camas, WA

Re: How To: Reduction Gear Oil Change

Sat Aug 04, 2018 3:53 pm

I am at 82,000. I should change it. How many quartets?
2011 SLe 06/17/11 Over 89000 miles 61%SOH 13.8kWh
2018 Honda Clarity PHEV
2014 Model S P85 77888 miles 256mile range
5.7kW DC Solar System

User avatar
Nubo
Posts: 5364
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: How To: Reduction Gear Oil Change

Sat Aug 04, 2018 4:43 pm

camasleaf wrote:I am at 82,000. I should change it. How many quartets?
You'll need 2 quart bottles. Iirc, the capacity is 1.6 quarts.
I noticed you're still working with polymers.

camasleaf
Posts: 644
Joined: Sun Sep 26, 2010 5:20 am
Delivery Date: 17 Jun 2011
Location: Camas, WA

Re: How To: Reduction Gear Oil Change

Sun Aug 19, 2018 4:02 pm

I replaced the gear oil on our 2011. It was dark in color and felt less viscous than the new Redline D6. Little accumulation on the magnets. After 7 years of no car maintenance I did not realize I did not have the Allen wrench sets anymore. Gave them away to afriend years ago to unblock the garbage disposal. So after removing the tray/shield, I put the wheel back for a day. The next day I was too lazzy to remove the wheel again and did the oil change and put the tray back without jacking the car. I have long hands but I am not a slim guy. A steep driveway helped when I reached for the back bolt on the tray.
2011 SLe 06/17/11 Over 89000 miles 61%SOH 13.8kWh
2018 Honda Clarity PHEV
2014 Model S P85 77888 miles 256mile range
5.7kW DC Solar System

HRTKD
Posts: 28
Joined: Thu Jan 24, 2019 11:37 am
Delivery Date: 07 Jul 2017

Re: How To: Reduction Gear Oil Change

Wed Mar 06, 2019 9:24 am

If I'm understanding this right, the gear reducer in the Leaf is analogous to a transfer case in a 4x4 truck. In my Titan I changed the transfer case fluid (plain old ATF) about every other third engine oil change. The truck was running synthetic engine oil with lab testing at each oil change. The oil change interval was 10,000 miles.

The transfer case was a sealed system but unlike the transmission had no cooling system. The oil after 30,000 miles was downright nasty.

Teflon tape can be used on the threads of the drain/fill plugs. We used that on our transfer case plugs on the trucks with no issues, but eventually I just slapped the plugs back in without any further enhancements. No leakage over 100K miles there.

I'll be doing this fluid change soon. I didn't realize it was something we could maintain so many thanks to the OP of the thread for this information. I have a couple cases of AMSOil synthetic ATF leftover from my Titan that I've been wanting to use up and a couple bottles will work fine for the Leaf.

I have pump spouts on the ATF bottle. So I don't need to use a hose from above. At least I'm hoping it will work out that way.
2015 Leaf S
2017 Ford F-350 CCLB 6.7L SRW 4x4

powersurge
Posts: 1472
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: How To: Reduction Gear Oil Change

Wed Mar 06, 2019 11:23 am

I did this service at 48K miles..

The fluid was not nasty... It is not like a differential that turns into sludge.. It was in the brown range (from the original red).

You need to do this with the car level. There are 2 ways to do this. One, with the car lifted at 4 points (level).

- you take off the large engine compartment protector from underneath.
- you first remove the top (fill plug), and then the bottom drain plug.
- you DO NOT NEED to use Teflon tape... no good
- fill until the fluid is generously coming out of the fill hole.

Alternate way to fill - After you drain, replace the drain plug, and lower the car back to level ground...
- With a section of tubing you can refill until the extra comes out, and replace fill plug from above. There is room to squeeze your arm through the engine area to hand tighten the plug, and finish with a closed end wrench.

easy.

Goodbar
Posts: 28
Joined: Wed Sep 20, 2017 6:39 am
Delivery Date: 31 Jul 2017
Location: Washington, D.C. Metro

Re: How To: Reduction Gear Oil Change

Tue Jun 04, 2019 6:48 am

I checked the level per the maintenance schedule at 15k miles/2 years. I used a bunch of extensions so I didn't have to pull the belly pan.

This is what the plug looked like — should I be worried?!
Image
2017 Leaf SV OpenEVSE 40A

goldbrick
Posts: 578
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: How To: Reduction Gear Oil Change

Tue Jun 04, 2019 8:42 am

I would say that is normal. If you are worried, clean the plug and check it again in a year. It will probably be much cleaner next time. It's normal for some metal to wear off the gears as they break in, that's why the plug is magnetic.

I'm more used to seeing powdery looking deposits instead of the longer shard-like metal on your plug but it could just be the magnification of the picture or maybe it's just because it's new. Or maybe if you wipe the plug the deposits are actually smaller and they just lined up in that shape due to the magnetics....

Goodbar
Posts: 28
Joined: Wed Sep 20, 2017 6:39 am
Delivery Date: 31 Jul 2017
Location: Washington, D.C. Metro

Re: How To: Reduction Gear Oil Change

Tue Jun 04, 2019 8:46 am

goldbrick wrote:I would say that is normal. If you are worried, clean the plug and check it again in a year. It will probably be much cleaner next time. It's normal for some metal to wear off the gears as they break in, that's why the plug is magnetic.

I'm more used to seeing powdery looking deposits instead of the longer shard-like metal on your plug but it could just be the magnification of the picture or maybe it's just because it's new. Or maybe if you wipe the plug the deposits are actually smaller and they just lined up in that shape due to the magnetics....
Thanks, I'm not particularly worried. I just have no baseline. I did wipe it clean and will check it before the powertrain warranty is up :)
2017 Leaf SV OpenEVSE 40A

User avatar
Nubo
Posts: 5364
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: How To: Reduction Gear Oil Change

Tue Jun 04, 2019 11:57 am

Goodbar wrote:I checked the level per the maintenance schedule at 15k miles/2 years. I used a bunch of extensions so I didn't have to pull the belly pan.

This is what the plug looked like — should I be worried?!
https://i.imgur.com/geSVlNQ.jpg
Looks fairly normal. Manufacturing the gear teeth perfectly polished and mated to each other would be prohibitively expensive, so it's done inside the gearbox by the driver. Most of those metal particles are from the first few thousand miles of use.

But -- the effort it takes to get the fill plug out is not all that much more than draining and re-filling. I like the idea of getting the initial wear-metals out of the case.
I noticed you're still working with polymers.

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