80-100mpge with Mercedes 300D Veggie/WVO Single Tank - Page 3 - Fuel Economy, Hypermiling, EcoModding News and Forum

UFO · 10-23-2012, 03:44 PM

Quote:

Originally Posted by cRiPpLe_rOoStEr

Even a newer HPCR Diesel can work with vegetable oil, but if it's pre-heated (then getting thinner) there are better results.

Not if you want it to last.

alohaspirit · 10-23-2012, 07:29 PM

thats why i dont run biodiesel

its good but very corrosive and id rather not chance it

UFO · 10-24-2012, 03:40 PM

Quote:

Originally Posted by alohaspirit

thats why i dont run biodiesel

its good but very corrosive and id rather not chance it

I drove my 240D for 6 years on B100, and I replaced only the tank lines and injector return lines once, with Viton. Never a problem after that.

Let me correct one point you made, biodiesel is not "corrosive". It is a very effective solvent, and it will dissolve natural and synthetic rubbers. But the Mercedes inline pumps and steel injectors are extremely durable, and Viton is very effective line material. I re-sealed my VW TDI pump with it and it handles B100 and pump diesel in any concentration.

alohaspirit · 10-25-2012, 06:47 PM

Quote:

Originally Posted by UFO

Let me correct one point you made, biodiesel is not "corrosive". It is a very effective solvent, and it will dissolve natural and synthetic rubbers. But the Mercedes inline pumps and steel injectors are extremely durable, and Viton is very effective line material. I re-sealed my VW TDI pump with it and it handles B100 and pump diesel in any concentration.

i agree

personally the thing that ive noticed is that since biodiesel is such a strong solvent it will find any old/failing part and chip away at it until it does fail.

these cars have enough gremlins as it is and i dont want to chase more of them

Cobb · 10-25-2012, 07:40 PM

I like the idea, but never got around to it. My benz had 475 thousand original miles and power train. THe trunk was rusted out and the passenger side door was dificult to shut unless you lifted it. Both front seat frames were partlly rusted through the floor as the fire wall leaked and a few body drains or plugs were plugged. It served my father well and he parked it for a year before he gave it to me. I drove it 6 months and had to use the little grey bottle of stuff and starter fluid to start it up. Frankly the last week I owned that car I left it running as to start it took 15 minutes. Nothing like seeing smoke out the back, oil psi, but the engine wont catch. I feared using too much starter fluid would screw up the engine.

Having said that I was fine getting 32 mpg in a full size sedan that kept up with traffic on i95.

alohaspirit · 10-25-2012, 09:47 PM

people tell me youre not supposed to use starting fluid on a diesel

(chances are it wont help anyway)

its usually compression or fuel related (line, filters, plugs)