Go Back   AudiWorld Forums > Audi Models > Audi S4 / RS4 > S4 / RS4 (B5 Platform) Discussion
Sign in using an external account
Register Forgot Password?

Notices

S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 11-17-2006, 10:29 AM   #1
EdyJun
AudiWorld Super User
Account #: 48484
 
Join Date: Dec 2002
Posts: 2,719
Default Can you mix leaded gas and unleaded gas together?

I have no cats. at the moment and want to make sure that I can mix leaded gas and unleaded gas together?

Edy

__________________

2000 Audi S4 STG 3
FATS = 3.66 w/ 91 oct

AIM: EdyJun



11 September 2001
In their honor. In their memory.

<font color="red">----------------------------------------------------------
<u><big>
<a href="http://homepage.mac.com/edyjun1/S4/index.htm">EdyJun's S4 Directory (FAQ, DIY, Info, Tips and Help)
</a>
</big> </u>----------------------------------------------------------
</font>
EdyJun is offline   Reply With Quote
Old 11-17-2006, 10:31 AM   #2
crew219
AudiWorld Super User
Account #: 74688
 
Join Date: May 2004
Posts: 4,920
Default doesn't leaded gas also kill your O2 sensors?

__________________


tyranny and anarchy are never far apart
crew219 is offline   Reply With Quote
Old 11-17-2006, 10:32 AM   #3
Gator Al (Al)
AudiWorld Super User
Account #: 67457
 
Join Date: Dec 2003
Posts: 12,495
Default My understanding is yes.

If you run leaded for too long, you will foul the O2 sensors(?), but it takes a while.
Gator Al (Al) is offline   Reply With Quote
Old 11-17-2006, 10:33 AM   #4
kiNGMak.:.OEM
AudiWorld Senior Member
Account #: 87076
 
Join Date: Jan 2005
Posts: 3,478
Default yup... no problem whatsoever

__________________
kiNGMak.:.OEM is offline   Reply With Quote
Old 11-17-2006, 10:34 AM   #5
Gator Al (Al)
AudiWorld Super User
Account #: 67457
 
Join Date: Dec 2003
Posts: 12,495
Default Not immediately.

A friend has been running leaded in his dragster Rabbit for a while now, sensors still OK.
Gator Al (Al) is offline   Reply With Quote
Old 11-17-2006, 10:35 AM   #6
EdyJun
AudiWorld Super User
Account #: 48484
 
Join Date: Dec 2002
Posts: 2,719
Default I was told that the old school O2 sensors yes, but not so much the new O2 sensors.

However i would not recommend to run leaded as a day to day gas, the o2s will die eventually.

Edy
__________________

2000 Audi S4 STG 3
FATS = 3.66 w/ 91 oct

AIM: EdyJun



11 September 2001
In their honor. In their memory.

<font color="red">----------------------------------------------------------
<u><big>
<a href="http://homepage.mac.com/edyjun1/S4/index.htm">EdyJun's S4 Directory (FAQ, DIY, Info, Tips and Help)
</a>
</big> </u>----------------------------------------------------------
</font>
EdyJun is offline   Reply With Quote
Old 11-17-2006, 10:38 AM   #7
krayziekujo
AudiWorld Senior Member
Account #: 28938
 
krayziekujo's Avatar
 
Join Date: Dec 2001
Location: San Mateo, CA
Posts: 1,223
Default so long as none of the guys on the forum belong to this agency

__________________
krayziekujo is offline   Reply With Quote
Old 11-17-2006, 10:51 AM   #8
ErikS4
AudiWorld Senior Member
Account #: 79316
 
Join Date: Aug 2004
Posts: 1,274
Default No. It kills your cats.

ErikS4 is offline   Reply With Quote
Old 11-17-2006, 10:58 AM   #9
bertworks(dan@jhm)
AudiWorld Senior Member
Account #: 99112
 
Join Date: Oct 2005
Posts: 1,140
Default i thought leaded gas could mess up your injectors too?

one of my good buddies(who is a car expert) told me they destroy cats, and could mess up your o2's and your fuel injectors, after i was going to fill up with some 110 leaded at the track but then decided not to.

it just sucks that the highest unleaded octane is like 104
__________________
www.JHMotorsports.com
bertworks(dan@jhm) is offline   Reply With Quote
Old 11-17-2006, 10:59 AM   #10
Casablanca Avant
Member
Account #: 51237
 
Join Date: Feb 2003
Posts: 4,782
Default why would you even want to?

__________________
- Tyler -
Casablanca Avant is offline   Reply With Quote
Old 11-17-2006, 10:59 AM
AudiWorld
Audi R8




Paid Advertisement
 
 
 
Reply

Tags
18t, 2000, audi, foul, fuel, gas, injector, injectors, leaded, mess, mix, race, run, s4, unleaded, vp


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -8. The time now is 03:49 AM.


Copyright 2014 AudiWorld.com Audi Enthusiast Community

Personal Contacts