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#1
12-12-2010, 02:10 PM
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Diesel fuel tank same as gas ?
I have a good diesel fuel tank in my 300sd parts car.
I was wondering if The gasoline models use the same tank ? If not what would the major differences be? Any help is appreciated in advance.
__________________
Experience : what you receive 3 seconds after you really needed it !! 86 300SDL 387,000? Motor committed suicide 81 300SD 214,000 "new" 132,000 motor 83 300SD 212,000 parts car 83 300SD 147,000 91 F700 5.9 cummins 5spd eaton 298,000 66 AMC rambler American 2dr auto 108,000 95 Chevy 3/4 ton auto 160,000 03 Toyota 4runner 180,000 wifes 
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#2
12-12-2010, 03:52 PM
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I believe they are essentially the same aside from the gasser models being a bit larger capacity.
__________________
-diesel is not just a fuel, its a way of life-  '15 GLK250 Bluetec 118k - mine - (OC-123,800) '17 Metris(VITO!) - 37k - wifes (OC-41k) '09 Sprinter 3500 Winnebago View - 62k (OC - 67k) '13 ML350 Bluetec - 95k - dad's (OC-98k) '01 SL500 - 103k(km) - dad's (OC-110,000km) '16 E400 4matic Sedan - 148k - Brothers (OC-155k)
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#3
12-12-2010, 04:24 PM
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On a W124 I can confirm they are the same. On a W126 I believe they are.
__________________
68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500 Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i
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#4
12-12-2010, 11:08 PM
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I thought they had different strainers- the gasser being a finer mesh, the diesel coarser. I know in doing a diesel swap, if you do not swap out the pickup sock to a larger mesh or remove it entirely, you can wind up with starvation issues especially in cold weather.
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#5
12-12-2010, 11:16 PM
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Do the gasoline tanks have supply and return lines like the diesel models? (Here I admit my total ignorance of how gasoline fuel injection systems work.)
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#6
12-13-2010, 12:14 AM
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Good to know guys , I appreciate the replies.
So the only pitfall is the screen when going from gas to diesel. The diesel screen should be more than adequate when changing over to gas. I'm guessing as long as I provide an external filter I should be OK. I'm also guessing the tank float will work the same be it gas or diesel ? Long story short after hours of research on the best tank and placement of that tank , Mercedes did their research as well. The best place if possible is above the rear axle and in the center of the vehicle just like ours sits. Seems any accident that goes to the extent of damaging a tank in that position you would not survive anyway, so says research. The final question was the gas diesel one and this forum has helped me once again. Thanks.
__________________
Experience : what you receive 3 seconds after you really needed it !! 86 300SDL 387,000? Motor committed suicide 81 300SD 214,000 "new" 132,000 motor 83 300SD 212,000 parts car 83 300SD 147,000 91 F700 5.9 cummins 5spd eaton 298,000 66 AMC rambler American 2dr auto 108,000 95 Chevy 3/4 ton auto 160,000 03 Toyota 4runner 180,000 wifes
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#7
12-13-2010, 11:29 AM
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The W124 sender/float switch is identical, gas and diesel. I put a gas sender in my diesel tank, posted a thread on it here.
__________________
"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#8
12-13-2010, 01:11 PM
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The only difference I have seen is the restrictor in the fuel inlet on the gasoline tanks (so you can't fit a large nozzle in there).
I agree on the fuel tank location, it was put there for safety. Unfortunately (I guess), later models moved it down to the behind the axle location, necessary for flip-down seats.
__________________
 Gone to the dark side - Jeff
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#9
12-13-2010, 02:49 PM
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Quote:
__________________
"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#10
12-13-2010, 05:26 PM
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I think it's funny how many people go nuts over my F250 having an in-cab tank, yet nobody worries about the tank in essentially the same location in the Mercedes.
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#11
12-13-2010, 05:36 PM
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In cab could be different than a tank in the trunk with a crush-space designed around it, and a steel wall between the back seat and the cabin, not really familiar with the design of the F-250 tank. Seems it used to be common for pickup trucks to have a tank beneath the seat.
__________________
Gone to the dark side - Jeff
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#12
12-13-2010, 06:27 PM
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The (original) VW Beetle has its fuel tank in front, essentially over your legs, but separated from the passengers by a firewall and protected from impact by the spare tire. Never heard anyone complain about that location. Similarly, the Mercedes fuel tank may be closer to the passenger compartment but it's a lot farther from the point of impact in a rear-end collision. The lower flammability of diesel fuel (and even moreso, biodiesel) is an added advantage.
__________________
"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#13
12-13-2010, 07:20 PM
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Quote:
 I love the "traction control" our fuel tanks provide... if its wet outside keep that tank full and you never have a traction problem.  The larger tank from a 560 would be nice for long road trips. I've always wanted one!
__________________
 1983 Toyota Tercel 4WD Wagon - 1984 Mercedes-Benz 300SD 4-Speed(My Car!) 2005 C230 Kompressor 6-Speed Manual
Last edited by SirNik84; 12-14-2010 at 12:51 PM.
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#14
12-13-2010, 09:27 PM
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And don't forget "Diesel Fuel Only" label is different from "Unleaded Fuel Only" ;-)
__________________
Cheers! Scott McPhee 1987 300D
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#15
12-13-2010, 09:42 PM
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The safety aspect is what brought this thread about.
OK putting on my Flame suit here's the explanation.. My daughter loves driving in the 66 Rambler but sadly safety wasn't on the top of AMC's list. Basically a steel block with lap belts. When I was younger it wasn't at the top of mine either. Then comes age and parenthood. Suddenly the fuel tanks seam extending past the rear bumper Isn't the most pleasant thought when stopping at a red light. So not wanting a fuel cell I started researching. Out of ideas I took a rest leaning on my 300SD parts car. Then a thought hit me . OK but its a diesel I'm thinking....... you guys know the rest. Good idea on the weight and traction SirNick I didn't even think about that aspect. Definitely will change the decal.... Unless maybe someones got a spare 616 laying around  Thanks again
__________________
Experience : what you receive 3 seconds after you really needed it !! 86 300SDL 387,000? Motor committed suicide 81 300SD 214,000 "new" 132,000 motor 83 300SD 212,000 parts car 83 300SD 147,000 91 F700 5.9 cummins 5spd eaton 298,000 66 AMC rambler American 2dr auto 108,000 95 Chevy 3/4 ton auto 160,000 03 Toyota 4runner 180,000 wifes
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