premium diesel - Page 2 - PeachParts Mercedes-Benz Forum

83-240D · #16 10-25-2004, 01:58 PM

they say they do no guarentee anything over 40 in one bredth while saying it is higher than standard. which pr guy thought of that?

to top that i was reading elsewhere that shell sells 60 cetane in thailand and a 50 in thailand along with their 40. arrrrrggggggggh

phantoms · #17 10-25-2004, 06:05 PM

Enmark's around here label their diesel "Super Diesel". I can't find any info on it and it's the only diesel they sell.

dlssmith · #18 10-25-2004, 06:33 PM

Here in Iowa, we have something called Ruby fuel or Ruby Red fuel. I called the manager of the fuel cooperative (farmer's co-op) and he said that the cetane is higher in that fuel usually 50. And they charge more for it, about 3 cents more than the regular. They also sell a soy-bio blend which contains 2% soy bio. That fetches about 5 cents more than regular.

DS
87 300D

oldnavy · #19 10-25-2004, 08:39 PM

Here's what I use most of the time. MFA

83-240D · #20 11-22-2004, 05:38 PM

i found a fella at bp thru thru bp website and he e-mailed me a list of stations that are SUPPOSED to be selling the 50 cetane diesel. there are 5 or 6 in the chicago area but none in wis near me. kinda like finding bio d same results.

TomJ · #21 11-23-2004, 12:11 AM

Diesel ain't what diesel used to be. Not only considering the ULSD issue, but the gradual lowering of cetane rating as has been pointed out. The easy cure is blending your own biodiesel into your blend, accomplishing substatially higher lubricity (B2 is 30% higher lubricity than the older normal sulphur added diesel) and higher cetane (B100 has a cetane rating of 10-15 points higher than normal pump diesel.)

So, you can make your own additive that has two benefits (more than, but at least the two above), and reduce the overall cost of your fuel bill at the same time.

A person could even mix WVO with their #2 if very well filtered and not too migh a concentration to cause gelling and probably get the same effects as bio-d. If using #1 in very high concentration for your winterizing, I would HIGHLY recommend cutting with WVO or bio-d.

bill murrow · #22 11-23-2004, 07:53 AM

Quote:

Originally Posted by TomJ

Diesel ain't what diesel used to be. Not only considering the ULSD issue, but the gradual lowering of cetane rating as has been pointed out. The easy cure is blending your own biodiesel into your blend, accomplishing substatially higher lubricity (B2 is 30% higher lubricity than the older normal sulphur added diesel) and higher cetane (B100 has a cetane rating of 10-15 points higher than normal pump diesel.)

So, you can make your own additive that has two benefits (more than, but at least the two above), and reduce the overall cost of your fuel bill at the same time.

A person could even mix WVO with their #2 if very well filtered and not too migh a concentration to cause gelling and probably get the same effects as bio-d. If using #1 in very high concentration for your winterizing, I would HIGHLY recommend cutting with WVO or bio-d.

I want to start making biodiesel but don't know what to do with the byproduct, glycerin. I know you can make soap out of it, but then I'll have a ton of soap sitting around and I don't want that either.

What do I do with the glycerin?

Also, you say I can mix WVO in as well but not too high a concentration. How high can I go without causing problems? 30%?

Cheers,

Bill

boneheaddoctor · #23 11-23-2004, 07:59 AM

I have heard you just set it out in the sun and let it dry out. Then discard in the trash.

But I could be mistaken as I'm still in the ranks of the Bio-deisel wannabes.

oldnavy · #24 11-23-2004, 08:46 AM

The lubricity is actually increased by approxmently 66% with B2 diesel fuel.

Here is the link to the National Biodeasel Board and with some reading you can get all the facts correct and not just be getting "hearsay" and partially correct information. Another good place is the Missouri Soybean Association & The Missouri Soybean Merchandising Council, so as I say research and read to set yourselves free of second hand misinformation. There are even sections & links at the National Biodiesel Board to the use of VO & WVO and making your own bio fuel.

Here is a National Map Of Biodiesel Fueling Sites

#25 11-23-2004, 10:28 AM

State law requires cetane levels to be posted on the pump, and these rate a 45, vs 40 from Crown or another "low end". I DID notice a difference with a fill up of 50 cetane diesel a while ago, but haven't seen this grade since. Think higher cetane is more of a peace of mind, winter start issue.

bill murrow · #26 11-23-2004, 10:49 AM

Quote:

Originally Posted by oldnavy

The lubricity is actually increased by approxmently 66% with B2 diesel fuel.

Here is the link to the National Biodeasel Board and with some reading you can get all the facts correct and not just be getting "hearsay" and partially correct information. Another good place is the Missouri Soybean Association & The Missouri Soybean Merchandising Council, so as I say research and read to set yourselves free of second hand misinformation. There are even sections & links at the National Biodiesel Board to the use of VO & WVO and making your own bio fuel.

Here is a National Map Of Biodiesel Fueling Sites

Thanks Walt. I've gotta find a way around all the high prices for regular fuel. I flatly refuse to bow down to OPEC!

Cheers,

Bill

oldnavy · #27 11-23-2004, 11:33 AM

Below are some links to biofuel info and dino fuel info.

Link 1

Link 2

Link 3

Link 4

Link 5 from Bosch Pdf form.

Link 5 is a real eye openner, and can be almost scarry for owners of new model high pressure diesel fuel systems.

Also very few if any (unless there have been resent changes I'm unaware of) states require any cetane rating on the pump or even cleanness of the fuel. Those that may, most likely seldom if ever preform pump site inspections due to like of manpower, money and desire.

boneheaddoctor · #28 11-23-2004, 11:34 AM

Thanks for those links...................

TomJ · #29 11-23-2004, 12:04 PM

Quote:

Originally Posted by oldnavy

The lubricity is actually increased by approxmently 66% with B2 diesel fuel.

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We both agree on the use of biodiesel and it's benefits.

Not sure where the 66% # comes from, but it's likely a comparison with modern pump diesel (post-1993 sulphur content), the 30% figure was a quote in comparison to the high-sulphur fuels these engines were designed for, not modern LSD.

Here's some real analysis data on lubricity that seems to go against the NBB's possibly inflated data (but still backs the increased lubricity fact to an extent):

http://www.cytoculture.com/Biodiesel%20Handbook.htm#Lubricity%20Properties

One quote:

"...The B-20 blend had a BOCLE result of 4,100 grams, close to the value for pre-1993 (high sulfur, high aromatic) petrodiesel fuel. In concentrations below 5%, the Biodiesel had no measurable effect on the lubricity of petrodiesel."

Also: "Tests run by Exxon showed that, compared to reference diesel fuel in 1993, a 20% blend of Biodiesel had significant, quantifiable improvements in reducing wear (193 micron scar for B-20 vs. 492 micron scar for petrodiesel) and friction (0.13 micron scar for B-20 vs. 0.24 micron for petrodiesel) while improving film coating ability of the blend (93% film with the B-20 vs. 32% film with the petrodiesel). The B-20 blend compared favorably for lubricity results against Exxon’s own lubricity additive."

Univeristy of Idaho tear-down analysis:

"In a University of Idaho durability test (1,000 hour tests on small diesel engines), it was found that methyl ester Biodiesel was equivalent to no. 2 diesel on the basis of long term engine performance and wear. The primary factors evaluated in that study were engine brake power and torque, injector tip coking (carbon deposition), and engine component wear based on oil analysis."

Here's NBB's lubricity paper:

http://www.pacfuel.com/pdf/Lubricity.pdf

Here's a pretty wild claim with no data to back it (likely a comparison with ULSD, not quite fully integrated yet, but they should state so):

From:
http://www.greenincubator.com/aboutbiodiesel/marine.htm

"BioDiesel blended at a 20 percent rate with petroleum diesel has a lower wear scar than traditional fuel. At the 20 percent blend level, BioDiesel shows improved lubricity with low sulfur petroleum diesel containing high or low aromatic levels. Start-up, power, range and cold-weather performance characteristics are similar to diesel. Even low levels of BioDiesel (1-5%) with diesel fuel offer superior lubricating properties. A 2% blend of BioDiesel (B2) can increase lubricity by over 130%."

As a firm believer and teacher of biodiesel use and mechanical operations using biodiesel, I still need verifiable data. There is enough data and evidence to support the increased lubricity of SME/RME, but finding a data set that is reliable and repeatable is mandatory if we're to get the mainstream to trust and use the fuel.

oldnavy · #30 11-23-2004, 01:38 PM

That's true about the lubercation differences, one of the problems is the cleanleness of the fuel to start with. I use a 2 micron absulote filter on our Jetta with B2 49 cetane diesel.

We (VW TDI CLUB) found one AMOCO station about a year ago that was selling 50+ cetane Diesel Premier, but the storage facility of the station was the pits. The fuel was so dirty the testing agency stated the state or feds one (not sure which) needed to be informed.

Also recommended the fuel be removed from the car and different sourse used for fueling.