# 4" down pipe dsm

**URL:** https://forums.speedlife.net/t/4-down-pipe-dsm/189239
**Category:** PittSpeed Automotive
**Created:** [April 14, 2007, 12:55am UTC](https://forums.speedlife.net/t/4-down-pipe-dsm/189239 "2007-04-14T00:55:38Z")
**Posts on this page:** 1
**Showing post:** 18

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### Author: ![fmfkid250](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fmfkid250/32/5973_2.png) [@fmfkid250](https://forums.speedlife.net/u/fmfkid250)
#### Post date: [April 15, 2007, 11:57am UTC](https://forums.speedlife.net/t/4-down-pipe-dsm/189239/18 "2007-04-15T11:57:23Z")

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> [@5/20 Nyspeed BBQ @ Chestnut Ridge-PRE MEET @ MY HOUSE!!](https://forums.speedlife.net/t/5-20-nyspeed-bbq-chestnut-ridge-pre-meet-my-house/28937/60):
>
> Had to take my 3" off to take the filter off also, not a big deal car isn’t DD, oil gets changed every couple months.

Making Big Power its rule of thumb to change the oil every 15-20 passes in the 1/4

I dident last year because i dident know any better but i will this year…

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