Fuel economy and improving it, among other things.

[rogercv1 at gmail.com (Roger concha)]

you forget that grant has two roccos. and I believe on this particular
questions he is talking about his MKII. all I know is that on my 16V I
never put in anything under 93 octane as it really affects mileage.

On 7/1/05, Dan Bubb <jdbubb@verizon.net> wrote:
> I don't remember the exact year of your car, but know it's a MK I.
> So, I assume 1.6L, regular mechanical/vacuum advance distributor, CIS w/O2
> sensor, and wide ratio 5 speed tranny (FF, FN, FO type stuff).
> My nephew gets 33 mpg with 1.8, and .71 5th on the highway and he has a
> habit of using his turbo some so it does seem to me that your numbers are
> low.
> I'd check ignition timing and make sure it's to spec or perhaps a little
> advanced. Make sure to disconnect the vacuum advance tube when you do this.
> There should be no vacuum advance at idle, if there is then your throttle
> plate needs to be closed down (and the idle adjustment screw opened out)
> until the vacuum is not present at the distributor. Check and make sure both
> the vacuum advance and mechanical advance work correctly.
> Second make sure your O2 sensor circuit is working and that the fuel system
> is in closed loop except at WOT.
> Third, wouldn't hurt to check your cam timing.
> Last, get some lowering springs so the nose of your car isn't up in the air
> causing all the air to go under the car and cause a lot of extra drag ;^)
> Dan
> 
> ----- Original Message -----
> From: "GGehrke" <ggehrke@gmail.com>
> To: "Scirocco list" <Scirocco-l@scirocco.org>
> Sent: Friday, July 01, 2005 9:36 AM
> Subject: Fuel economy and improving it, among other things.
> 
> 
> So in the 43-whatever-mpg thread a couple people were saying they got
> over 30mpg on their sciroccos (w/o diesel motors).  I've been keeping
> a close eye on my mileage and such since I fixed my speedometer (day
> before cincy) and have not been able to get those sort of numbers and
> it's been essentially 100% highway miles.
> 
> Since then I've gone 1174 miles on 41.731 gallons of 89 octane.  That
> comes to 28.1mpg.  Between individual fills I'm usually around 27.5.
> The other day on my drive home I drove for a while with nothing but
> fuel economy in mind for one stint across KY and went 150 miles at
> 30.08mpg, but that required driving strictly 65 +/-5 mph, being
> extremely conscious of hills, very slow smooth throttle changes, and
> even drafting behind trucks.
> 
> Is this as low as I feel like it is for the engine?  What can I do to
> improve it.  I have one more 600 mile pull left at the end of this
> summer, and I'd really like to get the best mileage I can.
> 
> Yesterday I changed my air filter (still just a paper filter), cleaned
> my fuel return line (someone wrote about it as the "tip of the year"
> or something on vortex), and fixed my alignment.  I might pick up a
> bottle of fuel system cleaner today at autozone cause they're cheap
> and I haven't done it yet.  What else is there to do?
> 
> And a spinoff question: What else can I do to my car now thats
> cheap/free.  I am going to replace my exhaust gaskets and do some body
> work, but other than that I'm basically out of stuff to work on!  I
> have a ton of free time and need ideas :)
> 
> -Grant-
> 
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