4kq fuel mileage revisited

[Brady Moffatt]

Hi All,

Just got back from a 1300km trip (Montreal - Cambridge,ON - Montreal). I
have mileage data for 975km, or about 605 miles.

I used 91.3 litres of fuel on 975km of highway driving at 125kmh + or -
10kmh. Small gusts way above that, but also some slowdowns. Call it 75mph or
so. Temperature was about 30C or 86F. No wind. No A/C although the belt is
still on. Car was heavily loaded for half the trip (driver + 400 pounds or
so). Oil is Mobil 1 15W50. Synthetics (Redline and Mobil) in driveline, too.
Tires to 33PSI cold all around. Oil temp varied from about 110C to just
below the 130C bar. Hard to tell what the actual figures were with the
digibar gauge. Engine temp is a bit of a guess since my gauge reads low, but
the cooling system is in good shape and has an OEM 88-92C thermostat.

There! Is that enough data?

That all comes out to 25 miles/ USgallon at about 75 mph on relatively
normal summer days.

I'm relatively satisfied. Should I be? Any recent numbers to compare to?

Cheers,
Brady Moffatt
Montreal, Quebec, Canada
86 4ksq, 290,000km
86 4ksq, 208,000km parts car
72 Datsun 240Z, 180,000 miles
In early stages of quattrosis accumulatus


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.375 / Virus Database: 210 - Release Date: 7/10/02