GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Time for rear differential flush? Suggestions?

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Old 03-09-15, 11:45 AM
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geoffpaint
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Default Time for rear differential flush? Suggestions?

I have a 2001 GS430 with approximately 104,000 miles. Was starting to consider doing a rear differential flush but was wondering at what milestones you would consider doing this, how often, should you use OEM fluids or is there better?, and if it's worth doing yourself or taking it to a mechanic? As I believe you have to have a liquid pump in your possession to attempt doing this job. Any suggestions/insight would be appreciated
Old 03-09-15, 11:53 AM
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Mr Jokster
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Hey I see you're somewhat new here, welcome

Dont forget to check out our DIY threads for maintenance like this I found this thread:

https://www.clublexus.com/forums/per...ntial-oil.html

However, the link is broken. But I know of where it was going, this is a good page to put in your bookmarks:

http://bananags.grantham-international.com/

Scroll down and you'll find the DIY for the flush Good luck
Old 03-09-15, 11:55 AM
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Mr Jokster
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Heres the link for the DIY:

http://bananags.grantham-internation...iff/index.html
Old 03-09-15, 11:52 PM
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geoffpaint
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Originally Posted by Mr Jokster
Thank you so much! Much appreciated! I just want to hear some peoples stories of changing their rear differential fluids and what where the difficulties they came across if any
Old 03-10-15, 12:21 AM
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tmf2004
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Originally Posted by geoffpaint
Thank you so much! Much appreciated! I just want to hear some peoples stories of changing their rear differential fluids and what where the difficulties they came across if any
i used the same DIY 2 years ago and worked out perfectly...
Old 03-10-15, 03:45 AM
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AL98GS400
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4 days of rain is putting my change of the differential fluid off here. Glad I saw the threads before hand. I came across a quart/gallon pump fitting combo with hoses at Oriely auto parts that should help out for $9.
Old 03-10-15, 07:04 AM
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newgsman
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I have done the diff fluid change on my 98 GS4 a few times. I use local Canadian Tire (Motomaster brand) synthetic diff fluid. I'm guessing its rebranded Mobil or Castrol fluid. Been using this stuff for over 15 years in my cars. My '92 Cressida went over 580K Km (360K miles) on the original diff before I sold the car. Never had an issue with the diff. On the GS4 I'm at 375K km and still no noises or issues.
Old 03-10-15, 07:26 AM
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RichS11
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What type of fluid are you guys using? The fluid in the DIY is not diff fluid. Just curious.....

Thanks
Old 03-10-15, 11:12 AM
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burny
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Mobile 1 synthetic 75-90 here in all 3 of my rides.
Old 03-10-15, 12:47 PM
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tmf2004
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Originally Posted by burny
Mobile 1 synthetic 75-90 here in all 3 of my rides.
THis....
Old 03-10-15, 12:55 PM
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wbmx1981
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I want to get this done on my car too. How important is it to replace both the drain and filler plug, as well as both crush washers? Some folks in the RX forum are replacing them.
Old 03-10-15, 12:58 PM
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tmf2004
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Originally Posted by wbmx1981
I want to get this done on my car too. How important is it to replace both the drain and filler plug, as well as both crush washers? Some folks in the RX forum are replacing them.
i used a new washer.. same hex bolt..
Old 03-10-15, 01:01 PM
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wbmx1981
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Originally Posted by tmf2004
i used a new washer.. same hex bolt..
Thanks!
Old 03-10-15, 01:39 PM
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newgsman
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Just remember to undo the fill plug before you do the drain plug. If the fill plug is seized, no point in draining the fluid...
Old 03-10-15, 03:32 PM
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burny
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If you need the car the day you do it or next day, I would recommend having the drain and fill plugs on hand. The hex fitting strips very easily. I had to notch a groove in mine first time I did it and use a flat head attachment to the air gun to get it off.


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