Is reducing an engines fuel consumption by 85% impossible?

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SUMMARY

The discussion centers on the feasibility of achieving an 85% reduction in fuel consumption in a 28-year-old Nissan Bluebird Wagon. The user claims to have recorded a fuel consumption rate of 5.9 L/100 km, significantly better than the car's rated 11 L/100 km. Despite skepticism from other forum members regarding the accuracy of the measurements and methodology, the user plans to conduct further tests and document results. The conversation highlights the need for improved testing methods to validate such claims.

PREREQUISITES
  • Understanding of fuel consumption metrics (L/100 km)
  • Basic knowledge of automotive engineering principles
  • Familiarity with fuel types and their impact on engine performance
  • Experience with data collection and analysis in automotive contexts
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  • Research methods for accurately measuring fuel consumption in vehicles
  • Learn about automotive testing equipment, such as 12V video cameras for documentation
  • Explore the impact of elevation changes on fuel efficiency
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Automotive enthusiasts, engineers, and anyone interested in optimizing fuel efficiency in older vehicles.

Do you believe I have reduced my fuel consumption by 85%

  • False=You cheated some how.

    Votes: 0 0.0%

  • True=I believe the figures.

    Votes: 1 100.0%

  • A 20L jerry can topup during the trip in a parking bay.

    Votes: 0 0.0%

  • Fill up half way on the trip with cash.

    Votes: 0 0.0%

  • Would you believe the figures if the MythBusters Tested my car with similar results.

    Votes: 0 0.0%
  • Total voters
    1
smokingwheels
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I expect to be shot down in flames but I don't mine one bit.

I have just done a bit of a drive in my 28 year old Nissan Bluebird Wagon about 10% city 90% HWY...NO Fancy EFI systems or direct injection here just a plain old carburetor running slightly rich at idle.

I just did a rough distance calculation on whereis.com ...308 Km on 18.23L of fuel that's about 5.9 L/100 km and have 2 other people in the car and with tools and baggage.
I will fine tune the mileage later on but I filled up at Warnbro then to Subiaco to Kenwick to Armadale then filled up at Wagin.
I put in 1/2 a tank of 98 octane as well but this would not account for such an increase in mileage.

Also the Elevation of Wagin is 303 m and the elevation of Wanbro is 20' so I was going uphilll slightly as well over the journey.

I have receipts which I can scan later on if needed.

My car is rated somewhere around 11 L/100 km on the HWY.

But if its impossible then how did I do it?

Poll options
1. False=You cheated some how.
2. True=I believe the figures.
3. A 20L jerry can topup.
4. Fill up half way on the trip with cash.
5. Would MythBusters buy my car and test it.

I will be doing some more trips soon and will keep more records.

I know I need to pull the engine out and put it on a test bed but at the moment its the only licensed car I have.

I guess I would need a professional 12 V video camera and mount it so it had a view of the road and the fuel cap and could record for length for 14 to 16 hours or maybe a cheap web cam to start with.
 
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1. 5.9L/100km looks achievable with some effort in a car like the one you describe.
2. 11L/100km doesn't look right for the fuel economy it is rated for. If this is the car, it is rated for 8: http://www.eurodb.com.au/used-car-Specification/NISSAN/BLUEBIRD/GX/1984/JAE/
3. This is nowhere close to the quality level required for serious discussion here.
4. We've been over this. It didn't fly two years ago and it doesn't fly today. As we told you two years ago, your methodology needs to get a lot better. It is time to stop humoring this.

Locked.
 
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