[remlemasi]

Originally Posted by Mrdeezy

Car runs so quiet, no smell. Feels a lot stronger with the HPR

Yeah! I put the nozzle up to my nose and very, very faint smell. Can't say the same for ULSD!

I do feel the car is a little quieter and the engine runs much smoother. Love it.

[remlemasi]

Originally Posted by roastbeef

nice. i'll have to give it a try. hows the mpg so far?

We'll see how mpg fairs. Pretty good so far but I'm doing a lot more highway and just had carbon cleaning, so it's hard to decouple.

(Sorry for multiple posts. On the app and don't know how to multi quote.)

[Chief Orman]

Two observations thus far. 1) For the first time ever my car stalled. I have no idea if the stall was related to the HPR fuel or was due, say, to my EGR block. That said, I have been running my EGR plates for six weeks without any incidents. I ran Carly post stall and only got the usual EGR related codes. In short, the only thing that changed was the fuel.

Good news, I have had fewer regens. That has to be related to the fuel. For the first time ever, I went through an entire tank of diesel without a regen.

[remlemasi]

Originally Posted by Chief Orman

Two observations thus far. 1) For the first time ever my car stalled. I have no idea if the stall was related to the HPR fuel or was due, say, to my EGR block. That said, I have been running my EGR plates for six weeks without any incidents. I ran Carly post stall and only got the usual EGR related codes. In short, the only thing that changed was the fuel.

Good news, I have had fewer regens. That has to be related to the fuel. For the first time ever, I went through an entire tank of diesel without a regen.

RE: First Paragraph... :

RE: Second Paragraph...

[Hoooper]

Chief there are a few other people who have had random stall issues. I dont know if or how they solved those issues, but that has happened to a few people in the past. I doubt its related to the fuel or you would have bigger problems

[Chief Orman]

Originally Posted by Hoooper

Chief there are a few other people who have had random stall issues. I dont know if or how they solved those issues, but that has happened to a few people in the past. I doubt its related to the fuel or you would have bigger problems

Ugh... I did a thread search on stall and came up with random stuff. Do you recall a common culprit for stalling? The car drives perfectly BTW. I think you are right that the fuel is unlikely to be the culprit.

[roastbeef]

Originally Posted by Chief Orman

Two observations thus far. 1) For the first time ever my car stalled. I have no idea if the stall was related to the HPR fuel or was due, say, to my EGR block. That said, I have been running my EGR plates for six weeks without any incidents. I ran Carly post stall and only got the usual EGR related codes. In short, the only thing that changed was the fuel.

Good news, I have had fewer regens. That has to be related to the fuel. For the first time ever, I went through an entire tank of diesel without a regen.

What do you mean when you say you have "fewer regens?"

[Chief Orman]

Originally Posted by roastbeef

What do you mean when you say you have "fewer regens?"

Meaning that I go through a DPF regen cycle approximately every 250 miles. I have now gone 400 miles without a DPF regen cycle.

[temporaptor]

http://www.biofuelstp.eu/downloads/S...iesel_Fuel.pdf

[TDIwyse]

Originally Posted by temporaptor

http://www.biofuelstp.eu/downloads/S...iesel_Fuel.pdf

Very interesting and informative. Thanks.

[temporaptor]

There is also G diesel that is available near Reno, NV. Made from natural gas to liquid conversion.
http://www.clearrefining.com/availability.html
Also goes by synDiesel in Texas
http://www.syndiesel.com

[Hoooper]

Having run two tanks now I can say that I don't notice any difference in drivability between hpr and normal d2. It appears that hpr gets measurably better highway mileage and lower city mileage. My distance to empty display to typically doesn't change more than about 30 miles on a given trip including a cold start and traffic. With hpr, distance to empty swings wildly as much as about 100 miles on a trip. Any amount of time driving steady state on the freeway sees the distance rocket up as though you are going 70 but not using any fuel at all. It's definitely different in that aspect.

[remlemasi]

Originally Posted by temporaptor

http://www.biofuelstp.eu/downloads/S...iesel_Fuel.pdf

Already posted this one. Just sayin'

Any more thoughts on HPR?

[remlemasi]

Originally Posted by Hoooper

Having run two tanks now I can say that I don't notice any difference in drivability between hpr and normal d2. It appears that hpr gets measurably better highway mileage and lower city mileage. My distance to empty display to typically doesn't change more than about 30 miles on a given trip including a cold start and traffic. With hpr, distance to empty swings wildly as much as about 100 miles on a trip. Any amount of time driving steady state on the freeway sees the distance rocket up as though you are going 70 but not using any fuel at all. It's definitely different in that aspect.

I noticed that too, kind of I sat in 1 hour of 10mph traffic and another half-hour at <5mpg and I saw the avg MPG shoot down significantly.

[dixy2k]

Just got a full tank of HPR at Shell today. We'll see how she goes.

[remlemasi]

Did a highway test run and got the following. OBD is usually 5-10% under so I wouldn't be surprised if this was in the 43mpg range.

I reset once I got up to speed on the fwy (60W to 10W). Targeting approx. 80mph (speedometer) the whole way. Car had me (150lbs) plus three passengers (approx. 400lbs).

Ambient temperature in the 80s (F).

I haven't been able to get fuel economy this high before, but it's probably due to a combination of CBU cleaning and HPR.

Do you guys without HPR regularly see these numbers under the conditions I listed above?

[remlemasi]

Originally Posted by remlemasi

Did a highway test run and got the following. OBD is usually 5-10% under so I wouldn't be surprised if this was in the 43mpg range.

I reset once I got up to speed on the fwy (60W to 10W). Targeting approx. 80mph (speedometer) the whole way. Car had me (150lbs) plus three passengers (approx. 400lbs).

Ambient temperature in the 80s (F).

I haven't been able to get fuel economy this high before, but it's probably due to a combination of CBU cleaning and HPR.

Do you guys without HPR regularly see these numbers under the conditions I listed above?

Sorry, photo didn't seem to attach

[Hoooper]

Every time I drive on flat ground without traffic is down I-5, which also happens to be windy constantly. Best case scenario is a light cross wind in which case with normal D-2 I get around 40 (indicated) going actual 75. I did the trip to fresno this weekend with about a 30 mph constant wind and going 80 mph (actual) and got 32.5 MPG on HPR. Not a very good comparison considering my insta-mpg meter was swinging from right on the 50 mark when the wind was quiet all the way down to 30 when wind was blowing. Wind sucks! I was hoping to get a good comparison on this trip but the wind just wasnt having that.

[BB_cuda]

Originally Posted by remlemasi

Yeah! I put the nozzle up to my nose and very, very faint smell. Can't say the same for ULSD!

I do feel the car is a little quieter and the engine runs much smoother. Love it.

Off topic, Remlemasi, those are nice HRE wheels. Which model number did you get? Those things are pricey at ~$1400 per corner and up. I like the 303M but low on my priority list.

Back to the HPR/HVO fuel thread.

[remlemasi]

Originally Posted by BB_cuda

Off topic, Remlemasi, those are nice HRE wheels. Which model number did you get? Those things are pricey at ~$1400 per corner and up. I like the 303M but low on my priority list.

Back to the HPR/HVO fuel thread.

Thanks! But I don't have HREs ($1400 per corner is way to rich for me). I have 18" Apex ARC-8 in Hyper Black. But I also don't recall posting a photo of my car (but perhaps I did) so perhaps you got me mixed up with another member?

[BB_cuda]

oops. Mr Deezy's car is in your post #45. I see the HRE "crest" in the center cap.

[taibanl]

Originally Posted by Chief Orman

Two observations thus far. 1) For the first time ever my car stalled. I have no idea if the stall was related to the HPR fuel or was due, say, to my EGR block. That said, I have been running my EGR plates for six weeks without any incidents. I ran Carly post stall and only got the usual EGR related codes. In short, the only thing that changed was the fuel.

Good news, I have had fewer regens. That has to be related to the fuel. For the first time ever, I went through an entire tank of diesel without a regen.

I express no opinion as to the likelihood, but there is a theory that would cover both.

The combustion byproducts of HPR are different from those of D2 and regens are triggered by the DDE based on measurements expected from D2 combustion. Thus, a certain measurement may be lower running HPR and yet total particulate matter may remain the same or higher. Thus, DPF may need regens just as often, but are not triggered by the HPR combustion byproducts. Backpressure in the DPF could then be causing combustion issues including stalls.

Not saying its the case but its plausible.