# 2003 Infiniti G35 advice wanted

**URL:** <https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585>\
**Category:** Maintenance/Repairs\
**Tags:** g35, infiniti\
**Created:** [March 16, 2019, 3:24pm UTC](https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585 "2019-03-16T15:24:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![James24](https://avatars.discourse-cdn.com/v4/letter/j/df788c/32.png) [@James24](https://community.cartalk.com/u/James24)\
**Post date:** [March 16, 2019, 3:24pm UTC](https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585/1 "2019-03-16T15:24:26Z")

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Exhaust, suspension, and/or AT advice and recommendations.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [March 16, 2019, 5:05pm UTC](https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585/2 "2019-03-16T17:05:22Z")

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Yep, don’t do any modifications. Use OEM parts or parts that “ meet or exceed” OEM specifications. Transmission fluid drain and fill at 30000 miles using manufacturers specified transmission fluid. But this car is 16 YO, do you know it’s maintenance history?

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**Author:** ![James24](https://avatars.discourse-cdn.com/v4/letter/j/df788c/32.png) [@James24](https://community.cartalk.com/u/James24)\
**Post date:** [March 18, 2019, 11:16pm UTC](https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585/3 "2019-03-18T23:16:22Z")

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Thanks for the reply -

Yes, I’m the second owner - Bought it in 2008, 65k miles. Today - 130k miles.

My Y-pipe just gave up the ghost - I wonder what the dealer gets for one of those.

Yes, I’ve been “swapping” 3.8 qrts of Nissan/Infiniti Type J (now S?) Fully synthetic ATF most summers. Helps the shifting, but there are some clunks and bumps now and then while underway in D. Also downshifts readily - will be less of an issue when I have the stock muffler (but not mid) reinstalled.

I wasted a $400 on a Megan Exhaust - too loud. The advice about buying the Nissan midpipe from a 6MT model - trades top end for the midrange - and cuts 50 pounds or so.

Cheers,

Jim

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**Author:** ![Honda-Blackbird](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/honda-blackbird/32/3159_2.png) [@Honda-Blackbird](https://community.cartalk.com/u/Honda-Blackbird)\
**Post date:** [March 18, 2019, 11:57pm UTC](https://community.cartalk.com/t/2003-infiniti-g35-advice-wanted/136585/4 "2019-03-18T23:57:25Z")

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If I remember correctly this is an expensive car to mod. I doubt that has changed much.