propane and nitrous inject it,extra 200 hp.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt

You're going too short of a distance to check your mileage, unless you fill the tank up to the exact same spot every time. If you're off by 2 ounces on a fill up, it'll throw all your numbers off on just a 30 mile trip.

Try 100 mile trip or better yet 200 miles. The longer the trip, the more accurate your average will be, if you fill up to the same spot each time.

It is pretty obvious from your first posted statistics that you should only fuel up on Tuesdays. Fuelling on Mondays looks like a real downer and milage killer to me.

My guess is the car is only hung over from the previous weekends on Mondays. Most people want to involve scientificly sound principals. I look at things as the fuel does and just go with the flow.

If you are still not satisfied with the overall fuel milage. Contact an ebay seller. They have figured out ways to really increase milage averages that have eluded most members on our site.

In fact I think I will myself as it sounds like fun. This old dog can learn some new tricks as well. The old ones like jumping through hoops all the time are now wearing.

APC window stickers are proven to add 30hp at the wheels...

...and with unicorn tears you can time travel!

In all seriousness though, I must echo what others have said. The only meaningful mpg numbers are those derived over several tanks and several hundred miles of driving. My 300D averages a solid 25. Best I've ever gotten on a tank was a hair shy of 28, worst was 23.

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1991 300D 2.5 "Rocinante"
2002 Golf TDI "Teen Spirit"
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1984 300D
1966 Mustang I6 3sp
1985 Mazda RX-7 GSLSE
1982 Toyota Supra
1977 Datsun 280z
1971 Datsun 240z

It sounds like some of the others would be better off sniffing the nitrous that putting in their car !!!

Consumption varies that much that calcs for less than 1000 miles dont show much !!

__________________
Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

hello I pulled this back up for reference. Right now am rebuilding my transmission. I left the rear gear alone still. But am putting a lower gearset in the trans out of a 91 560sel . Its 3.87 opposed to the 3.68 .should give me more pep.I will do my timed runs again once I have got it back in. After I put some.miles on it.

Update on mileage I was getting 26 mpg .in the city. Never on the interstate yet.
Most miles on a tank was 528 I ran it slap out.this is when my AC was broken at the time. But checked it with AC on when.I got it repaired I run out anywhere between 428/460 miles on a tank.