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Best Diesel Fuel Additive for 1st gen Cummins?

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Old 04-06-2024, 01:58 PM
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Best Diesel Fuel Additive for 1st gen Cummins?

Just moved from Oregon to Colorado and noticed my engine performance has shifted a bit. For a while I was using Lucas diesel fuel additive (that didn't seem to do much) and so switched back to Stanadyne which but I'm curious if Hot Shot's Secret Diesel Extreme Diesel Fuel Additive might work best.

Thanks!
Old 04-06-2024, 03:18 PM
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I've always used Power Service in the white bottle. It helps replace the lubricity lost when they went to ULSD.
Old 04-06-2024, 07:41 PM
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Thanks. Certainly gets stellar reviews. Specifically does it increase power and even MPG in your case as it helps injectors stay clean etc.?
Old 04-07-2024, 05:24 AM
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Originally Posted by edwinsmith
I've always used Power Service in the white bottle. It helps replace the lubricity lost when they went to ULSD.
Same here for the same reason. I switch to gray in the summer. Plus some 2 cycle oil for even more lubricity.
Old 04-07-2024, 06:14 AM
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I have a truck that runs better if I have a QT or two of 2 stroke oil in the tank.
Old 04-07-2024, 08:28 AM
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I mix up a bottle of Walmart's finest 2 cycle oil with a bottle of white Power Service and a small bottle of Power Service Diesel Kleen to make an even 2 gallons. I've been running that mix for around 20 years with no problems. However, due to the cost and decreasing availability of both ingrediencies, I will be transitioning over to Hotshot. There was a "lubricity study" done by a group decades ago on this subject. I thought it was posted somewhere on this forum, but I can't find it. It shows a number of different well known additives and how they stood up to testing. I also believe there are some YouTubes on the subject.
Old 04-07-2024, 09:00 AM
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I usually grab Penzoil. It needs to be the 3W type 2 cycle for low ASH or something? I DID read that here on the forum, a long time ago.

Let us know how you like the Hotshot once you get there, and if you remember.
Old 04-07-2024, 09:20 AM
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Originally Posted by 67IHC
Just moved from Oregon to Colorado and noticed my engine performance has shifted a bit. For a while I was using Lucas diesel fuel additive (that didn't seem to do much) and so switched back to Stanadyne which but I'm curious if Hot Shot's Secret Diesel Extreme Diesel Fuel Additive might work best.

Thanks!
What's the difference in elevation from where you were in Oregon?
Old 04-07-2024, 03:57 PM
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Thanks. I will. Like I said, both Lucas and Stanadyne seem like worse fits right now.
Old 04-07-2024, 03:58 PM
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Only 5,200 feet. Folks say that such an elevation gain takes away 1%-3% of your power. Not quite sure about that so far.
Old 04-08-2024, 10:26 AM
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I run Hot Shots secret EDT in my 1st gen and my 4th gen. Project Farm on YouTube did a wear test against different diesel additives and Hot Shot came out the winner. I believe Power Service was right behind it.

I trust his "study" as he doesnt take hand outs from companies and buys all his products he tests to be able to say what he wants and not be swayed.
Old 04-09-2024, 08:03 AM
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Thanks. I have some on order to try soon. Stanadyne clearly isn't working as well here.
Old 04-09-2024, 08:58 AM
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Just use waste oil. Sump oil,transmission fluid, hydraulic oil. Just be sure no water is in it. You will get more power and it will run quieter for free.
Old 04-09-2024, 10:21 AM
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If you try to burn synthetic trans fluid you will soon have to rebuild your IP. DAMHIK. Type F might have grit in it.
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Old 04-09-2024, 11:03 AM
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Originally Posted by Rug_Trucker
If you try to burn synthetic trans fluid you will soon have to rebuild your IP. DAMHIK. Type F might have grit in it.
I agree, no automatic transmission fluid for my Cummins motors either.
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