Cadillac CTS-V Series Forum - 2004 to 2007 Forum specifically for Cadillac CTS-V series discussions.
400 horsepower, TREMEC 6-Speed Transmission and Brembo brakes...
 |
Cadillac Forums: MPG -- Premium vs  | | 
03-24-08, 07:55 PM
| | Cadillac Owners Member Cadillac(s): Cadillac | | Join Date: Jan 2008
Posts: 48
Casino Cash: $2200
| | | MPG -- Premium vs
I've been using 89 fuel for the V.. getting about 18-19 mpg. I thought I was saving money, but really it was costing me.
I put in a tank of premium gas and as of now it reads 21.2mpg.
That equates to approximately an extra 35 miles per tank.
It costed me $2 more for the prmium, but saved me $6 in mpg.
I'm not 100% concerned in the few bucks it saves.. but just a FYI for those MPG watchers.. |
03-24-08, 08:08 PM
| | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | Join Date: Nov 2004
Posts: 4,795
Casino Cash: $4330
| | | Re: MPG -- Premium vs
The last time I saw 22 mpg mine was stock.
Now I can get maybe 19 but I have to be on the highway.
Around town or short trips forget it.
Like an Irishman I knew I think it has to drink half a pint just to wake up!
__________________
The "V", almost as bad as model airplanes! |
03-24-08, 08:11 PM
| | Cadillac Owners Fanatic Cadillac(s): Cadillac | | Join Date: Mar 2008
Posts: 127
Casino Cash: $1800
| | | Re: MPG -- Premium vs
all i know is i get a $8 car wash when i fill up and still pay less than filling up my old lq9 denali |
03-24-08, 08:45 PM
| | Supercharged small block on rails! Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI
Posts: 4,849
Casino Cash: $5219
| | | Re: MPG -- Premium vs
Quote:
Originally Posted by lordlang  ... using 89 fuel ... getting about 18-19 mpg.
... premium gas ... it reads 21.2mpg. ... | That's more of a difference than I would have thought. Must be pulling a lot of timing when going to the lower octane.
__________________
'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werks Bushings, V Headrests, Wheel To Wheel Dyno Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, Mille Miglia Wheels (winter only), WW Clear Sidemarker Lenses, Full-Size Spare Tire Kit, Magnuson "Maggie" Polished w/2.8", CTS Console, FG2, KARS Stage III, Aggressive Street Alignment (per FAQ) ... 472 RWHP (Mustang dyno). |
03-25-08, 06:14 PM
| | Cadillac Owners Member Cadillac(s): Cadillac | | Join Date: Mar 2008
Posts: 37
Casino Cash: $435
| | | Re: MPG -- Premium vs
There is also some mpg impact when ethanol is used in higher concentrations. |
03-25-08, 07:05 PM
| | Mod hell begins Cadillac(s): 04 V Raven | | Join Date: Jun 2007 Location: Portland OR Age: 37
Posts: 320
Casino Cash: $2000
| | | Re: MPG -- Premium vs
I don't see the point of saving $2 or $3 to use a lesser octane.
__________________ What kind of grille is filling up your rearview mirror? Shocker of shockers, if you look closely you will see a crest, a Cadillac crest, followed by the unmistakable snout of the Cadillac CTS-V. The V is joining the luxury performance sedan party – and this time, it’s not wearing blue hair, bifocals or a clown nose.  |
03-31-08, 03:34 PM
| | Cadillac Owners Connoisseur Cadillac(s): '05 CTS-V | | Join Date: Jul 2004 Location: Elkridge, MD Age: 35
Posts: 3,582
Casino Cash: $6505
| | | Re: MPG -- Premium vs
Sorry for the late bump, but I've been offline for a while.
Almost unbelieveable, I was driving across the Chesapeake Bay bridge tunnel last week (which is about 25 miles long, and mostly flat flat flat), with the windows up, ac/heat off, in 6th @ 60 mph w/ cruise on, I averaged 27.8 mph over the 25 miles. WOW!
I guess if you lived in kansas, and could keep your foot out of it, the old lead sled can be somewhat fuel efficient.
-Chris
Horrificly blurry proof attached! Damn camera phone.
__________________
2005 CTS-V:No Roof|FG2|Corsa|UUC Shifter|LPE CAI|FFV v2 IntakeTube|GM Drilled Rotors + Hawks + UUC lines|Hotchkis Sways|Kooks 1.75 Coated LTs + cats|KARS III Cradle Kit|Mamofied Fast90 + NW90|224/228 111+0 XFI/XE-R .610/.588|ATI 25% UD Pulley|YT 1.7" UltraLites|Melling HiFlow Oil Pump|Comp Chromeoly 7.425" PR's|Cloyes Hex Adjust Timing Set|Lucas 42# Flow Matched Injectors|Patriot Gold Xtreme Springs, Ti retainers, Super 7 locks|All ARP Fasteners|Mustang Dyno Tuned (SAE): 412rwhp / 380 rwtq |
03-31-08, 04:24 PM
| | Cadillac Owners Fanatic Cadillac(s): 2006 Platinum CTS V | | Join Date: Mar 2008 Location: Commerce, Michigan Age: 35
Posts: 190
Casino Cash: $1805
| | | Re: MPG -- Premium vs
I don't know about the highway but I'm averaging 13mpg in the city...Maybe I need to slow down...maybe not. |
03-31-08, 04:40 PM
| | 1,300 HP in the drive!!! Cadillac(s): 2005 CTS-V, Black, SC, 510RWHP/560FTLBS and a really slow C6 | | Join Date: Aug 2004 Location: Home of SuperBowl XLIII Champs Age: 43
Posts: 1,215
Casino Cash: $425
| | | Re: MPG -- Premium vs
Quote:
Originally Posted by JD03Cobra I don't know about the highway but I'm averaging 13mpg in the city...Maybe I need to slow down...maybe not. | JD,
13mpg in the city is good, now aim for 10mpg.
This ain't no stinking Prius Forum, more kudos for lower mpg posts! |
03-31-08, 07:10 PM
| | Cadillac Owners Enthusiast Cadillac(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo | | Join Date: Mar 2006 Location: NYC Age: 37
Posts: 668
Casino Cash: $1591
| | | Re: MPG -- Premium vs
Quote:
Originally Posted by onebadcad JD,
13mpg in the city is good, now aim for 10mpg.
This ain't no stinking Prius Forum, more kudos for lower mpg posts! |  Mine is aroung 10mpg
__________________
'05 Platinum l Sunroof l LPE cold air intake l Magnaflow cat-back l Valentine One (hardwired), w/ custom mount l "CUSTOM" intake tube l UUC shifter w/Lindsay bushings l UUC leather wrapped shift knob l CAGS eliminator l K9 GEAR rear seat cover l CruiseCam l HID fog lights l GM accessory wheels w/Falken RT-615s l Superchips tuned l Hotchkis anti-sway bars l Billet A/C vent knobs l Hawk HP+ front, HPS rear l CG-Lock l Specter Works Bushing inserts ll BMR pinion support, waiting to get installed | | Cadillac Discussion Tools | | | 
Cadillac Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off
Censor is ON | | | |
|
|510RWHP/560TQ|383ci-built|Maggie 2.8|AFR 225|Cam|B&B Exhst&Hdrs&X-Pipe|LPE CAI|KARS III|Mez WP|Spec3+/McLeod|Hotchkis sways|MSDs| CDRs|Hawks&SSBLs|CCW BC SP600s|PS2s 295r|EC Cowl Hood|UUC Shifter&Knob|Black Grills|Ult Peds|10-sec motor/12-sec rear
