Dumb question, but can I add Diesel Kleen 911 directly to fuel tank? I'm a little confused with the directions. I added the white bottle winterizer last weekend, but with the extreme cold we have been getting. My truck still seemed to have gelled up.

 

I have heard people draining and filling the fuel bowl with it. Then dump the rest in the tank. I personally have never used it though.

 

What kind of temps are we talking about? Only sustained temps below freezing will cause the wax in the fuel to begin solidifying.Where are you located? Good idea to update your CP. Most places that are subject to sustained sub freezing temps will have "winter blend diesel" or #1 diesel. #1 diesel has a lower cetane rating due to it's higher refinement and lower wax content. It's similar to kerosene which has virtually no wax, and consequently no lubricating qualities either. People up in the great white North of Alaska not only use block heaters (which seems to take care of engine fuel), but will wrap the fuel lines and tank with freeze tape (this only works for overnight where you can plug in). Another tip from up North is to add one cup of kero to a full tank of fuel (add kero before filling). It's also advised to use a sulfur additive when doing this. Back in the early '70's when I spec'd trucks for Sea Land, they would have engine coolant piping added to the fuel tanks.

 

i am in western Massachusetts. The temps here have been in the teen's, single digits, and up to -15° the last few weeks. It's currently 8° and winds up to 40mph. My truck didn't come with the block heater cord, but I ordered one and will be on tomorrow.

 

Wow. Yeah you peeps are being hit hard by this storm. During the winter of '88-'89 I was in Siberia. Couldn't be worse than that though - in the minus teens for four months at least.

 

good news! it's going to be 30s and 40s this week. Just in time for that block heater cord to get installed. Lol

 

diesel does not unwax with better temps....expect to have to chaingd the undercarriage filter a few times....if it were me...I would drain the tank and run the fuel thru some tied off jeans.


must use anti gel during the winter....

 

Diesel will unwax or 'remix' but the temperature required is much warmer than the temp that it waxes at.

We had a truck in the shop this year gelled up. We removed the filter and took it apart on the bench. After a week at 50F it still had just as much gel on it. I believe it needs over 60F, sometimes even warmer, depends on the exact mix of diesel. In our experiment with the filter it was in open air and not submerged in diesel which may have had some effect.

Also for the record, 911 will remix the fuel but does not prevent future gelling. If you are in a spot where you need to add 911, then you also need to add the white winterizer fluid as well.