# Transmission Oil Question!

**URL:** <https://forums.speedlife.net/t/transmission-oil-question/118444>\
**Category:** SON240sx Automotive\
**Created:** [September 13, 2008, 3:29pm UTC](https://forums.speedlife.net/t/transmission-oil-question/118444 "2008-09-13T15:29:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![izzy\_domain](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/izzy_domain/32/5583_2.png) [@izzy\_domain](https://forums.speedlife.net/u/izzy_domain)\
**Post date:** [September 13, 2008, 3:29pm UTC](https://forums.speedlife.net/t/transmission-oil-question/118444/1 "2008-09-13T15:29:30Z")

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I need to change my transmission oil. I did some reasearch and found a tutorial online, it suggested that I use 75W90 GL-4. I went to both Cdn Tire, and Part Source today looking for either Royal Purple or Red Line Manual tranny fluid. Neither place had either. Does anyone know where I can get this? Or if is there something better you’d recommend?

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**Author:** ![jlee](https://avatars.discourse-cdn.com/v4/letter/j/898d66/32.png) [@jlee](https://forums.speedlife.net/u/jlee)\
**Post date:** [September 13, 2008, 3:32pm UTC](https://forums.speedlife.net/t/transmission-oil-question/118444/2 "2008-09-13T15:32:05Z")

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i use royal purple 75w90, i like it… i got it from performance improvements on the queensway.

Jon

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**Author:** ![polishprince](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/polishprince/32/5690_2.png) [@polishprince](https://forums.speedlife.net/u/polishprince)\
**Post date:** [September 13, 2008, 4:09pm UTC](https://forums.speedlife.net/t/transmission-oil-question/118444/3 "2008-09-13T16:09:39Z")

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jrp in mississauga carries redline and i think u can order online too… royal purple is at performance improvements