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CorvetteForum - Chevrolet Corvette Forum Discussion
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NOX too high on smog test?
Kale
on Dec 6, 2001
Oct 25, 2023
01:37 AM
by
Ricks94vette
11
1,937
C4 Tech/Performance
AMSOIL Releases new high ZDDP Classic Car Synthetic Z-ROD Line
C66 Racing
on May 7, 2011
Sep 20, 2017
08:55 AM
by
Stan78Vette
14
14,418
Autocrossing & Roadracing
[Z06]
Recommened Oil for Track/Street Use
Spdfrk81
on Mar 23, 2012
Sep 28, 2015
04:02 PM
by
AzDave47
18
15,469
C6 Corvette ZR1 & Z06
Is it zinc/phos or phos/zinc in motor oil?
540 RAT
on May 8, 2012
May 8, 2012
08:56 PM
by
63mako
5
2,191
C3 Tech/Performance
ZDDP ppm vs Zinc/Phos elemental ppm
(
1
2
)
540 RAT
on Sep 2, 2011
Oct 17, 2011
12:18 PM
by
Ravoll
22
16,426
C3 Tech/Performance
T56 conversion and the Speedo
DanZ51
on Jun 5, 2011
Sep 27, 2011
03:15 AM
by
DanZ51
14
6,284
C4 Tech/Performance
First Oil Change
codimcleod
on Jul 25, 2011
Jul 27, 2011
09:40 PM
by
gcusmano74
11
1,146
C3 Tech/Performance
No ppm emission test fail need help
mjfox
on Jul 13, 2011
Jul 13, 2011
05:33 PM
by
hooked073
1
705
C4 Tech/Performance
Failed inspection,,, but i want to pass
(
1
2
3
)
69SSC5
on Jun 11, 2011
Jun 28, 2011
09:53 AM
by
anciano
58
3,878
C4 Tech/Performance
AMSOIL Releases new high ZDDP Classic Car Synthetic Z-ROD Line
C66 Racing
on May 7, 2011
May 30, 2011
04:30 PM
by
Mike7061
12
3,326
C1 & C2 Corvettes
Failed Emmissions test ?
daddysvet92
on May 15, 2011
May 21, 2011
11:48 PM
by
daddysvet92
11
1,907
C4 Tech/Performance
Failed Emmissions Test?
daddysvet92
on May 15, 2011
May 15, 2011
01:13 PM
by
mike100
1
829
C4 Tech/Performance
Amsoil!!!!!
(
1
2
3
...
Last Page
)
RichieRichZ06
on Jun 16, 2010
Dec 22, 2010
05:37 PM
by
tjZ06
73
5,629
Northern California
HELP! Drive Clean FAIL 2005 C6
(
1
2
)
teckguy
on Apr 5, 2010
Sep 18, 2010
04:16 PM
by
lionelhutz
33
2,591
Canadian Events
[Z06]
which oil you use on your Z06
(
1
2
3
...
Last Page
)
toroz06
on Feb 15, 2010
Jul 16, 2010
10:54 PM
by
glass slipper
85
7,581
C6 Corvette ZR1 & Z06
What was your most "silly" mistake that you've ever done to your 'vette?
(
1
2
3
...
Last Page
)
HamadUP
on Jun 29, 2010
Jul 6, 2010
01:17 PM
by
Stewart's74
64
4,919
C3 General
ZDDP Plus Oil Additive
(
1
2
)
yellow 72
on Apr 1, 2010
Apr 4, 2010
04:29 PM
by
63mako
38
5,236
C3 Tech/Performance
Emissions test Failed! Please help
(
1
2
)
cnd_beancounter
on Feb 17, 2010
Feb 18, 2010
09:31 PM
by
C66 Racing
21
4,212
C5 General
EGR- do I need it?
(
1
2
3
)
mfpvette80
on Sep 9, 2009
Sep 13, 2009
09:34 AM
by
grandmastercorvette
44
5,649
C3 Tech/Performance
Calif Forum Members!! Smog Readings.
dbiddle
on Aug 24, 2009
Aug 25, 2009
05:10 PM
by
dbiddle
14
1,007
C5 Tech
smog test Inspection help!!
dbiddle
on Aug 24, 2009
Aug 25, 2009
12:37 PM
by
dbiddle
18
1,188
C5 Tech
Zinc In Oil for ZZ3
(
1
2
3
)
trsulliv
on Jul 29, 2009
Aug 1, 2009
10:16 AM
by
billla
42
8,072
C3 Tech/Performance
Smog question high HC (ppm)
Kool88vette
on Jul 24, 2009
Jul 25, 2009
10:46 AM
by
Kool88vette
3
1,304
C4 Tech/Performance
HC PPM- emissions
BKarol
on Jun 11, 2009
Jun 11, 2009
06:52 PM
by
grandmastercorvette
2
779
C3 Tech/Performance
ZDDPlus oil suppliment
one-72
on Jun 4, 2009
Jun 6, 2009
08:12 AM
by
one-72
16
1,512
C3 Tech/Performance
Not just another oil for flat tappet cam question. Rottela = slug? Royal Purple?
(
1
2
3
...
Last Page
)
ImBatman
on May 20, 2009
May 28, 2009
02:11 AM
by
RunningMan373
63
13,135
C3 Tech/Performance
Vehicle speed sensor and TKO 600
Russ T Gate
on Apr 11, 2009
Apr 11, 2009
09:55 PM
by
67-427ci
1
3,950
C1 & C2 Corvettes
What oil to use?
(
1
2
)
RSVette65
on Feb 23, 2009
Mar 1, 2009
02:35 PM
by
StingU2
31
2,319
C1 & C2 Corvettes
Zinc Content in Oil
(
1
2
)
roscobbc
on Aug 29, 2008
Sep 1, 2008
08:54 PM
by
onsturn
37
5,528
C3 Tech/Performance
Royal Purple 15w40
(
1
2
)
73 LS-4
on Aug 4, 2008
Aug 13, 2008
04:58 PM
by
Jims66
22
2,103
C3 General
Zinc phosphate (ZDDP/ZDTP) in engine oil
(
1
2
3
)
C7GrandSport
on May 25, 2008
Jul 29, 2008
12:08 AM
by
Little Mouse
45
20,434
C3 Tech/Performance
Oil for our old style motors?
(
1
2
3
)
66L72
on Jul 7, 2008
Jul 19, 2008
09:57 PM
by
JohnZ
50
6,828
C1 & C2 Corvettes
Lab test of Royal Purple XPR Racing Oil
(
1
2
)
540 RAT
on Feb 11, 2008
Jun 18, 2008
12:28 AM
by
jackson
23
14,396
C3 Tech/Performance
High HC(PPM) reading at idle during emissions testing
93lt1fun
on May 23, 2008
May 29, 2008
02:42 AM
by
93lt1fun
4
14,135
C4 Tech/Performance
Aftermarket Zinc/ZDDP additive at Pace Performance
KyleDallas
on Apr 5, 2008
Apr 10, 2008
11:09 AM
by
KyleDallas
19
2,729
C1 & C2 Corvettes
Poll
Mr. Clean Autodry - works but not the best solution.
(
1
2
)
bugman
on Aug 9, 2007
Aug 14, 2007
01:41 AM
by
bugman
20
2,389
Car Care Discussion
[Emissions]. High HC (hydrocarbon) See my report.
86PACER
on Jun 14, 2007
Jul 28, 2007
11:43 AM
by
CentralCoaster
10
1,439
C4 Tech/Performance
Shell Rotella T, high zinc content?
(
1
2
)
Kalway
on May 26, 2007
May 28, 2007
06:52 AM
by
jim2527
20
14,272
C3 Tech/Performance
Failed emissions for NOX, rough idle....?
XtremeVette
on Jun 27, 2006
Jun 28, 2006
10:56 AM
by
Don in Vermont
12
1,413
C4 Tech/Performance
Need emissions help
jaa1992
on May 25, 2006
May 25, 2006
08:48 AM
by
jaa1992
0
312
C4 Tech/Performance
E-Checked the Ruby today...
rhanselman
on Apr 4, 2006
Apr 5, 2006
05:35 PM
by
BigBadRed
3
502
C4 ZR-1 Discussion
vss on 4l60e
aminnich
on Mar 21, 2006
Mar 21, 2006
02:25 PM
by
CFI-EFI
3
669
C4 Tech/Performance
Failed Emissions NO ppm too high
criley
on Sep 17, 2005
Sep 20, 2005
12:20 AM
by
lt4dogman
7
1,517
C4 General Discussion
I passed my emissions inspection
(
1
2
)
93 ragtop
on Aug 15, 2005
Sep 14, 2005
09:20 AM
by
FELNGR8
28
1,398
C4 Tech/Performance
Passed CA Smog Test Today :-)
Third Gear
on Apr 21, 2004
Apr 23, 2004
04:50 AM
by
86PACER
12
720
C4 General Discussion
[Z06]
Mr Clean - Car wash system
(
1
2
)
jerome
on Jan 13, 2004
Jan 18, 2004
10:44 PM
by
GNX#424
20
2,513
C5 General
California smog Nazis
(
1
2
)
ciscokid
on Jul 2, 2003
Jul 14, 2003
09:12 AM
by
TIMSPEED
25
1,818
C4 Tech/Performance
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