Ever since I starting pouring primrose 405 summer/409 winter in my truck I havent had any cold weather starting issues.

http://www.dieselplace.com/forum/uploads/9AD_IMG_7037a.jpg

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I don't use any additives, and have not had any cold weather starting issues either. http://www.dieselplace.com/forum/smileys/Big Smile.gif

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<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">i was born in long beach and raised in riverside county...i don't EVER remember snow like is shown in the pics !</TD></TR>
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It was big bear this morning. See my other post in off topic.

Roegs

Ill bet you the gas station you fill up at adds the additives for you. How cold have you started an UN-plugged truck?

Coldest my truck has seen was -7F, no additives, no plug in, started up just fine.

Yeah, my truck sat for a week in -0 degree weather. When I went to start it, it fired right up, idled rough for about 30 seconds, then was fine with no additives.

Doesnt the wax in diesel gel at around 0? The gas station has to be adding some additive to your diesel #1.

Try running some diesel #2 and see if she starts at 0 and below.

I have not run additive in quite a few months now. Coldest temp I have started my truck was -2F at 2:30pm (that's right, PM) and that was just a few weeks ago. Not plugged in, no glow plug cycling, just turned the key, waited for the light to go out and I started the truck right up. Thanks to the winter blended fuel, I have no gelling issues. Not sure if the #2 is cut with kero, or some type of additive is added.


PC-


Your point of running #2 at that cold of temp is bunk. Just because everybody doesn't use additives doesn't mean we are wrong. I don't want this to turn into another 5w-40 oil thing either... If the station we fill up at already adds additives, what is the point of adding more at an additional cost?? Primrose, FPPF, PS, DFA are not the end all be all of additives, just like 5w-40 oil probably isn't the best for everyone either...see where I am going with this???


BobEdited by: 4x4man

Don't use additives. Cold weather starts no prob. Guess lows in the 40's might have something to do with it. Problemchild, you need to move!

All premium diesel fuel has some type of additve already included. That is what the extra .10 cents/gallon at the pump is for. Straight #2 will most likely not contain an additive. Blended fuel will contain even less lubricaty.


Straight #2 has been proven to not have the required lubriciaty to facilate a very long lasting engine. Just like when the EPA stripped gasoline back in the early 70's. The fuel lost it's lubrication and octane. Several millon engines became casulatys of the EPA. Gasoline now contains all sorts of additives included from the manufacture. It is also filtered very well and very clean.


If you are attempting to gain maximum longjevity and also maximum performance, I believe the real question is not "Do you need an additive?" rather" Which additive is best"


I have not been showin enough conclusive data to know which is best. There are many out there. Litterally hundreds. Few high quality and many, many nothing more than snake oil. Some even harmfull.


Hopefully someday soon all fuel manufactures will include additives in our fuel and proper filtering at the pump. It will then become a no-brainer much like gasoline!Edited by: Bronco

I have always run an additive, and our winter fuel is a pretty agressive blend. If nothing else I want the lubricity. So far I have had no problems with unplugged starts down to -30 F, but I will plug in every chance I get below 20 F. I deal with several diesel engines regularly and I can tell you that cold start failure is a very real problem. Just not so much with a Dmax. --SS

Try running some diesel #2 and see if she starts at 0 and below.[/QUOTE]





Every station I've seen is #2 Diesel. Cold starts have not been a problem yet...

SteveCA,


Although the pump states # 2, it has most likely already been blended with some percentage of winter fuel or winterizing additive. This is why so many see a slight drop in fuel milage. Straight # 1 will go down to very very very low temperatures, however you will see a noticable reduction in fuel milage and also other performance issues. Hope this helps you make proper fueling choices.

Bronco,


Thanks for the info. I'm new to the Diesel world and haven't yet found anything other than #2 here in Northern California. Maybe I'm not looking hard enough..


Is there a preference for one over the other, under differing circumstances??


Steve

The Dmax should be able to run all winter long on regular # 2 that has been preblended. Most pumps supply this fuel during the winter. It is adjusted to the actual climate you are receiving your fuel from. I can not speak for the rest of the US but I would assume all fuel is some sort of winter blend nation wide? Just at varying percentages.


I could see people with older diesels wanting to use # 1 during the winter. I believe the heavy duty trucks use # 1 as well?? I have only seen one station with #1. It was a Conoco in Cheyenne Wyoming. Just off of I-80 and HW85.


Somebody else with more knowledge in the # 1 and # 2 department feel free to chime in. That kinda sounded funny to me?

Well I live in sunny cali. I was kinda talking #1 #2 like when you drive from Bakersfield to say the sierras and its -4f their at night. You filled up at 70F and got non winter #2. The truck is not going to start.

I did this very same thing and my truck barely started. Only 2 cylinders fired and knocked and smoked before 409.

Well - I don't use additive and it's been down to -25F here in Minnesota... I will say however that the fuel I purchase is the Koch Arctic Diesel, and they say it's good to like -30F...


The thing makes more noise when it first starts, but overall I've been impressed with it.