I just found a 1981 240D 4 speed in the salvage yard with a like new 2nd aux fuel tank in the trunk. It has a lable on it saying it is manufactured by "Bird Automotive Division". It is a custom fit type and aluminum. I'm guessing 20gal or so. It was connected to the main tank by a big fitting on the bottom of it to the main tank drain plug(I guess). Is this something out of the norm or something neat?? to me it looks like the pressure/weight of the fuel in the main tank fed fuel over to the aux tank doubling the fuel capacity. What would something like this sell for?? Also do the diesel Benz all 123 use this fuel tank or do they change from year to year?
I'm currently shopping for a 123 (240d 4spd) so I'm keeping it but if not I will sell it.
Thanks,
Hip

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2006 Jetta TDI DSG 320k miles
1997 Ford F150 325k miles 4.2L V6 "Work Truck"
2008 Tundra 225k miles 5.7L
1982 240D.....sold
1984 300D...Totaled OUCH!
1985 300D Turbo 222k miles "Dos" sold to 79Mercy
1986 300SDL 98K miles "The Beater"....sold
1987 190E 2.3 16v Euro spec 115K miles....sold