What temp does untreated diesel gel? - Dodge Cummins Diesel Forum
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post #1 of 13 (permalink) Old 01-16-2009, 09:05 PM Thread Starter
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What temp does untreated diesel gel?

It's even getting cold in NC, and just to be safe I put in some Diesel Fuel Supplement® +Cetane Boost® by Power Service Products.

On their web site, it seems that the cold filter plugging point, or CFPP is somewhere between 0-5 degress for untreated #2 diesel.

Any thoughts??


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post #2 of 13 (permalink) Old 01-16-2009, 09:59 PM
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Fuel that's untreat will probably gel tonight for sure. It's gonna be awfully close to 5 or lower tonight.
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post #3 of 13 (permalink) Old 01-17-2009, 11:59 AM
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I always heard it starts clouding at +8°F but that was for LSD, don't know on the new ULSD.

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post #4 of 13 (permalink) Old 01-17-2009, 12:06 PM
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I thought i read somewhere that #2 diesel fuel gels at -10. quote me if im wrong but make sure ya use the anit gel. But, i had a problem yesterday being soo cold even with double the dosage of the anti gel, the fuel still froze up.

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post #5 of 13 (permalink) Old 01-17-2009, 12:49 PM
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Quote:
even with double the dosage of the anti gel
Doubling the dose doesn't do anything but cost you more.
The recommended dose is all it takes, any more has no effect.
If it still gelling then it's time to start adding #1 to your fuel.
I've had no problems with straight #2 plus Power Service down to -30°F for the last 20 years.

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Last edited by illflem; 01-17-2009 at 12:51 PM.
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post #6 of 13 (permalink) Old 01-17-2009, 12:52 PM
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well my truck's fuel gelled up today when i went out to start it, my fass light stayed on, just pushing air i guess, sounded wierd to. being treated right now.cant believe i forgot to treat my gas on the coldest week of the year.oh yeh temp was around 0 give or take 5 degrees

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post #7 of 13 (permalink) Old 01-17-2009, 01:01 PM
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I guess I don't understand why the cold wheather is a problem, when you should use additive all year around in my opinion. For lubrication mainly but in the winter your covered for cold wheather. I put Howes in my trcuk once every two fill ups in the summer for lubrication, and every fillup in the cold months. Plus whatever the gas stations add on there own. With this new low sulfur diesel it just makes sense to me to use additive all year around. But thats just my thinking!

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post #8 of 13 (permalink) Old 01-17-2009, 02:49 PM
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Quote:
I guess I don't understand why the cold weather is a problem, when you should use additive all year around in my opinion.
Some folks use additive year round but some don't contain anti-gel.
That's when colder than normal weather can catch you with your pants down

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post #9 of 13 (permalink) Old 01-17-2009, 03:11 PM
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ULSD Cold Weather Information

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post #10 of 13 (permalink) Old 01-17-2009, 04:25 PM
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Yeah but it was -42 wind chill the other day. They say it doesn't effect metal or liquid, I say bs! Haha but ill keep the double dosage in mind. Thanks

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post #11 of 13 (permalink) Old 01-17-2009, 04:39 PM
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Quote:
Originally Posted by illflem View Post
Some folks use additive year round but some don't contain anti-gel.
That's when colder than normal weather can catch you with your pants down
Correct some don't have anti-gel. So I guess you better know what to put in your truck. Or ask, since your on a forum. But to not add an additive in the winter, and take it for granted that the gas station uses good enough stuff to prevent the problem in the first place, is not to smart.

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post #12 of 13 (permalink) Old 01-17-2009, 05:00 PM
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Quote:
Originally Posted by Cumminsturbo22 View Post
Yeah but it was -42 wind chill the other day. They say it doesn't effect metal or liquid, I say bs! Haha but ill keep the double dosage in mind. Thanks
Nick, sorry to disappoint you, but my cousin is a meteorologist for the NWS and he says wind chill does not/cannot make any object colder than the ambient air temperature. Wind chill is a measure of how fast bare skin looses heat. So -42 with the wind chill factor means that bare skin will loose heat at a rate the same as -42 with no wind. Thursday AM, it was -22 at my house...air temp according to my thermometer.....wind chill doesn't affect thermometers. Since we're not too far apart, I'd say about a 10mph wind to get the -42 wind chill. I've been up in way northern WI when it's been -40.....with no wind, it's cold, but bearable!!

My old '99 fired right up on Thursday. Had her plugged in though on a timer. I didn't get out until 1:00PM....4 hours after the timer shut off. Cranked slow, but she fired up......smoked like chimney though.
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