duramax 3.0 fuel additive

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steiny93

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I'm in Fargo ND with multiple trips north, we see lots of -20F and -30F (ambient not wind chill).
I use zero additives in any of our diesels (ecodiesel, cummins ISM, cummins 6.7, baby dmax). Haven't had a gelling issue since the 90's.

In the winter, buy all your fuel from the largest truck stop you can.
 

Jellyfrosh

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I'm in Fargo ND with multiple trips north, we see lots of -20F and -30F (ambient not wind chill).
I use zero additives in any of our diesels (ecodiesel, cummins ISM, cummins 6.7, baby dmax). Haven't had a gelling issue since the 90's.

In the winter, buy all your fuel from the largest truck stop you can.

I wouldn't run additives just for gelling. The LM2 is a 36k psi injection system, any increase in lubricity you can get you should go with. The manual specifically calls for it.
 

steiny93

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I wouldn't run additives just for gelling. The LM2 is a 36k psi injection system, any increase in lubricity you can get you should go with. The manual specifically calls for it.
Where does the manual call for it?
In the 2021 manual the following are the only sections I could find referring to additives. Which say, use a specific quality of fuel; if you don't have that use the GM additive. Which is different then use additives.

From the manual: https://my.gm.ca/gmc/en/content/dam...gmc-yukon-xl-denali-owners-manual-english.pdf

Fuel Additives
TOP TIER Detergent Diesel is highly recommended for use with your vehicle. If your area does not have TOP TIER Detergent Diesel, GM recommends the use of ACDelco Diesel Fuel Conditioner. This will help maintain optimal engine performance. GM does not recommend other aftermarket diesel additives. If low-quality diesel is used for refueling, GM recommends adding ACDelco Fuel System Treatment Plus-Diesel to help clean engine deposits. This is available at your GM dealer


Use of fuel that does not comply with the required technical standards can lead to engine power loss, increased wear, or engine damage and may void your warranty. Some improper fuels are:
. Diesel fuel with the addition of gasoline.
. Diesel fuel mixed with engine oil or automatic transmission fluid.
. Triglyceride fuels, such as raw vegetable oil or animal fat, in any form, including with blends of diesel or biodiesel.
. Marine diesel fuel and fuel oils.
. Diesel-water emulsions, such as Aquazole.
. Aftermarket diesel fuel additives, which contain alcohols, organo-m
 

Jellyfrosh

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Where does the manual call for it?
In the 2021 manual the following are the only sections I could find referring to additives. Which say, use a specific quality of fuel; if you don't have that use the GM additive. Which is different then use additives.

From the manual: https://my.gm.ca/gmc/en/content/dam...gmc-yukon-xl-denali-owners-manual-english.pdf

Fuel Additives
TOP TIER Detergent Diesel is highly recommended for use with your vehicle. If your area does not have TOP TIER Detergent Diesel, GM recommends the use of ACDelco Diesel Fuel Conditioner. This will help maintain optimal engine performance. GM does not recommend other aftermarket diesel additives. If low-quality diesel is used for refueling, GM recommends adding ACDelco Fuel System Treatment Plus-Diesel to help clean engine deposits. This is available at your GM dealer


Use of fuel that does not comply with the required technical standards can lead to engine power loss, increased wear, or engine damage and may void your warranty. Some improper fuels are:
. Diesel fuel with the addition of gasoline.
. Diesel fuel mixed with engine oil or automatic transmission fluid.
. Triglyceride fuels, such as raw vegetable oil or animal fat, in any form, including with blends of diesel or biodiesel.
. Marine diesel fuel and fuel oils.
. Diesel-water emulsions, such as Aquazole.
. Aftermarket diesel fuel additives, which contain alcohols, organo-m
Yeah that's the exact part I was referencing.

I use the GM additive.
 

DmaxDenaliXL

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Where can you find Top Tier diesel? I went to this website and it shows zero stations within 500 miles that sell it. So therefore it must be safe to assume no one is using it. Likely 5% or fewer are also using additives, because well...humans.
 

steiny93

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Where can you find Top Tier diesel? I went to this website and it shows zero stations within 500 miles that sell it. So therefore it must be safe to assume no one is using it. Likely 5% or fewer are also using additives, because well...humans.
In my area it's alot of them (Exxon, Shell, Argo, Costco, etc). My guess is that it's a marketing deal, would be interesting to see if the fuel is actually any different.
 

DuraYuk

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In my area it's alot of them (Exxon, Shell, Argo, Costco, etc). My guess is that it's a marketing deal, would be interesting to see if the fuel is actually any different.
I think your spot on. Similar to top tier gasoline that some gas stations advertise..
 

StephenPT

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Top Tier is a spec. A gas/diesel station can sell fuel that meets the spec, but may or may not advertise it as meeting that spec. Similar to DEXOS oil. Most oil manufacturers have oil that meets the DEXOS spec and have paid GM the licensing fee to put DEXOS on the bottles.

Top Tier Diesel must meet two ASTM specs and be filtered down to 10 micron for automotive size nozzles.

 

DmaxDenaliXL

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In my area it's alot of them (Exxon, Shell, Argo, Costco, etc). My guess is that it's a marketing deal, would be interesting to see if the fuel is actually any different.
Do they also show up on that website or are you seeing it advertised at the pump as top tier. What I found was that almost everywhere as top tier gas, but hardly any diesel.
TLDR: How do you find out that you're pumping top tier diesel?
 

steiny93

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I've never noticed it at the pump, but I haven't looked either (spec says they need to display at the pump)

I just read through the Top Tier spec https://www.toptiergas.com/diesel-licensed-brands/; the only spec's it calls out are: ASTM D975 or ASTM D7467 which are the standard specs for diesel types and biodiesel amounts, water monitoring, 10 micron filtering.


Reading the above,
Someone explain to me how an additive would address any Top Tier spec other then water intrusion? Or am I missing something? IE, I'm not seeing a spec around lubricity or cetane for example.
 

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