# 2016 Cadillac SRX - Soot

**URL:** <https://community.cartalk.com/t/2016-cadillac-srx-soot/140965>\
**Category:** Maintenance/Repairs\
**Tags:** cadillac\
**Created:** [May 25, 2019, 2:30pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965 "2019-05-25T14:30:49Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![Boudreaux48](https://avatars.discourse-cdn.com/v4/letter/b/edb3f5/32.png) [@Boudreaux48](https://community.cartalk.com/u/Boudreaux48)\
**Post date:** [May 25, 2019, 2:30pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/1 "2019-05-25T14:30:50Z")

</div>

Car has 28,000 miles and the inside of the tail pipes has black soot  
what could be causing that?

---

<div class="post-metadata">

**Author:** ![old\_mopar\_guy](https://avatars.discourse-cdn.com/v4/letter/o/6bbea6/32.png) [@old\_mopar\_guy](https://community.cartalk.com/u/old_mopar_guy)\
**Post date:** [May 25, 2019, 4:21pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/2 "2019-05-25T16:21:50Z")

</div>

A high ratio of city driving to highway driving. If your check engine light is not on, forget about it. If it is on, get it diagnosed.

---

<div class="post-metadata">

**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [May 26, 2019, 11:50pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/3 "2019-05-26T23:50:57Z")

</div>

Maybe it burns a little oil?  
AFAICT it’s not GDI, which makes soot.

---

<div class="post-metadata">

**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [May 27, 2019, 12:25am UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/4 "2019-05-27T00:25:37Z")

</div>

Modern fuel injected engines make a surprising amount of soot. If your oil consumption is normal I wouldn’t worry about it.

---

<div class="post-metadata">

**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\
**Post date:** [May 27, 2019, 4:57am UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/5 "2019-05-27T04:57:37Z")

</div>

Your SRX has the 3.6L LFX V6. It has direct injection. Direct injected engines often leave particulate deposits on the tailpipes. It’s normal and isn’t reason for concern.

---

<div class="post-metadata">

**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\
**Post date:** [May 27, 2019, 1:17pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/6 "2019-05-27T13:17:19Z")

</div>

cars with cats burn hotter but you would say all cars have black sooty pipes.  
so all cars have an issue?  
or all cars are ok?  
its when other cars do not have a black tail pipe that makes you wonder

---

<div class="post-metadata">

**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [May 28, 2019, 2:22pm UTC](https://community.cartalk.com/t/2016-cadillac-srx-soot/140965/7 "2019-05-28T14:22:13Z")

</div>

My 2006 Toyota Matrix had not a trace of soot; bare bright metal in the pipe.  
First time I’d seen that.