# 2018 Lexus IS 300 AWD differential fluid service **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** is-300, lexus\ **Created:** [December 1, 2024, 9:21pm UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219 "2024-12-01T21:21:52Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Clueless33](https://avatars.discourse-cdn.com/v4/letter/c/dbc845/32.png) [@Clueless33](https://community.cartalk.com/u/Clueless33)\ **Post date:** [December 1, 2024, 9:21pm UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219/1 "2024-12-01T21:21:52Z")
Hello everyone! My 2018 Lexus IS 300 AWD FSPORT is 2,000 miles away before I need my next interval maintenance service at 70,000 miles. I suspect this will happen around March of next year. Looking through the maintenance log, I can see where the manufacturer recommends checking the front and rear differential fluid at 60,000 miles and again at 90,000 miles. But what I don’t see is when should the fluid be changed. That’s why I went over at the [Clublexus.com](http://Clublexus.com) forum to ask the guys there who are familiar with my specific car on what they believe I should do. I didht get enough response from the community, though, and the few who responded recommended changing the fluid at 60,000 miles as a preventative measure. However, on a different thread asked by someone else, I saw a handful of conflicted answers, where they indicated for Canadian drivers to have this service done every 30,000 miles ( possibly due to the extreme weather there ) and never for the USA drivers. What do you recommend ? I haven’t had this service done on my car and I don’t want to perform a service that isn’t necessary as throwing away money is not something I like to do. However, if this service is imperative, I will have no problem getting the front and rear differential fluid changed. Your advice is much appreciated. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [December 1, 2024, 9:35pm UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219/2 "2024-12-01T21:35:46Z")
I would change it at your next service. A vacuum device can drain a diff in a few minutes with a few more to pour in fresh fluid. But I’m a bit OCD about fluid changes for everything. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [December 1, 2024, 9:36pm UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219/3 "2024-12-01T21:36:27Z")
I change the diff fluid when I change the tranny fluid. Tester ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [December 2, 2024, 12:12am UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219/4 "2024-12-02T00:12:49Z")
Don’t forget the transfer case (awd unit)… it needs a little loven also… lol ---
**Author:** ![bing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bing/32/4619_2.png) [@bing](https://community.cartalk.com/u/bing)\ **Post date:** [December 2, 2024, 1:27am UTC](https://community.cartalk.com/t/2018-lexus-is-300-awd-differential-fluid-service/198219/5 "2024-12-02T01:27:21Z")
Since new I have done transmission, transfer case, and differential fluid changes every 30,000 miles. Cost is slightly over $100. In addition, the dealer strongly recommended the differential fluid be changed at the first 10,000 miles. Maybe over kill but cheap insurance. No way I would go 60,000.