# LSD fluid flush

**URL:** https://forums.speedlife.net/t/lsd-fluid-flush/108936
**Category:** SON240sx Automotive
**Created:** [August 27, 2007, 6:39am UTC](https://forums.speedlife.net/t/lsd-fluid-flush/108936 "2007-08-27T06:39:10Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Fargus](https://avatars.discourse-cdn.com/v4/letter/f/43a26b/32.png) [@Fargus](https://forums.speedlife.net/u/Fargus)
#### Post date: [August 27, 2007, 6:39am UTC](https://forums.speedlife.net/t/lsd-fluid-flush/108936/1 "2007-08-27T06:39:10Z")

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I have a bone stock 92 240 w/hicas. I need to do an LSD flush asap and possibly a tranny flush, too. what’s your recommendations for fluid? what would work well (and last me for awhile)?

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### Author: ![Osad](https://avatars.discourse-cdn.com/v4/letter/o/3ab097/32.png) [@Osad](https://forums.speedlife.net/u/Osad)
#### Post date: [August 27, 2007, 6:56am UTC](https://forums.speedlife.net/t/lsd-fluid-flush/108936/2 "2007-08-27T06:56:57Z")

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Any thick Gl4/Gl5 compatible gear oil is good.

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### Author: ![roast](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/roast/32/5498_2.png) [@roast](https://forums.speedlife.net/u/roast)
#### Post date: [August 27, 2007, 7:40am UTC](https://forums.speedlife.net/t/lsd-fluid-flush/108936/3 "2007-08-27T07:40:27Z")

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> [@Review: So, I watched FnF III](https://forums.speedlife.net/t/review-so-i-watched-fnf-iii/13835/4):
>
> Any thick Gl4/Gl5 compatible gear oil is good.

IIRC, GL4 is spec’d for the VLSD and GL5 is not the same as GL4.