More power after 1st oil Change - Dodge Cummins Diesel Forum
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post #1 of 22 (permalink) Old 06-18-2019, 09:34 AM Thread Starter
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More power after 1st oil Change

So I had heard about this but I was hesitant to believe it. First, Ii heard guys saying that they could chirp the tires on their HO Cummins Rams. Well mine never chirped. Then I started asking around about why there's no break-in on the engines. Most folks said they just built them to not need it. That seemed hard to believe but OK. Then someone said that they tune it down when they are new to ease wear during break in and that the tune opened up performance after the first oil change. That made a little sense. So Yesterday, I changed the oil at 3300 miles. I know they supposedly dont need it, but on every other new vehicle I've bought, I change at 700 and again at 3700 before beginning standard OCI. So I put 3 gallons of Mobil 1 Delvac 5w40 and a Wix XP filter on and I go to drive it...CHIRP. Noticeable performance boost. The butt dyno says a ton more power. So in reality, maybe a little more power. But the tire chirp was not made up. It was definitely tuned down before. I don't know how they would do that. Maybe when I reset the oil life? Or some combo of the reset along with oil life sensors? One other concrete thing I noticed was my oil pressure went way down. Before it ran between 49-53 PSI. Now it runs 34-50PSI. Oil level stayed the same (right up to the top of the "safe mark". That could just be a property of the new Mobil 1 Delvac oil but I doubt it. Maybe that’s it...maybe they add a viscosity thickener from the factory that bumps up oil pressure and limits performance until you get the standard grade oil in it?


My 1st Ram: 2019 Laramie 3500
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post #2 of 22 (permalink) Old 06-18-2019, 12:56 PM
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Yeah, OK UMmmmm OK sure. What ever works. Glad your happy.
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post #3 of 22 (permalink) Old 06-18-2019, 01:04 PM Thread Starter
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Yeah, OK UMmmmm OK sure. What ever works. Glad your happy.
I know! I wouldíve never thought of if. And I get how this sounds dicey. Like the countless times when guys say a cold air intake shaves a second off of their 1/4 mile. But I can say for certain that before yesterday, this truck could not spin my 35x12 Mickey Tís and now it can. I was impressed with it before. But it could not roast em. And I tried. If thereís another explanation, Iím all ears.
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My 1st Ram: 2019 Laramie 3500
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post #4 of 22 (permalink) Old 06-21-2019, 09:27 AM
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I have seen posts of a factory "below 2000 mile" de tune, never seen anything about the full torque being related to an oil change. Maybe it released the full torque at 2000, but you never had a chance or the right conditions to test till after you oil change? Curious to see if others notice now that you have felt a result. If mine ever shows up, will probably test this as well.

Good choice on the oil. Ran Delvac1 on my 2013 for the first 100K miles. Now I use Rotella T6 cause the specs seem a little better, and it's made from natural gas. For the pressure difference, try going back to a factory filter at your next change and compare. You changed 2 variables (oil brand and filter brand) so hard to guess which one if any had anything to do with it.

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post #5 of 22 (permalink) Old 06-21-2019, 09:51 AM
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Ummm that doesn't sounds right to me. Also if i'm not mistaken there is no oil pressure sensor on these trucks. Only a matrix in the the programming to give you a value on the screen based of other parameters. if you release traction control should roast 35" 12.5" all day but your trans will not love you.

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post #6 of 22 (permalink) Old 06-21-2019, 10:37 AM Thread Starter
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Ummm that doesn't sounds right to me. Also if i'm not mistaken there is no oil pressure sensor on these trucks. Only a matrix in the the programming to give you a value on the screen based of other parameters. if you release traction control should roast 35" 12.5" all day but your trans will not love you.
Right. I didnt sound right to me either. Just as no engine breakin didnt sound right. The truck certainly has enough power at the flywheel to roast them. I just meant with nannies on, it wouldnt before. The oil pressure thing was just another thing I noticed and likely unrelated
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My 1st Ram: 2019 Laramie 3500
6.7 HO Aisin AS69RC. Borg Wagner 44-48 4x4. 12" AAM Rear end. CCLB. Single Rear Wheel. Max Steel. 295/70/18 (35x12) Mickey Thompson MTZ P3. No lift/no level.
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post #7 of 22 (permalink) Old 06-21-2019, 10:47 AM Thread Starter
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Originally Posted by dgiturbo View Post
I have seen posts of a factory "below 2000 mile" de tune, never seen anything about the full torque being related to an oil change. Maybe it released the full torque at 2000, but you never had a chance or the right conditions to test till after you oil change? Curious to see if others notice now that you have felt a result. If mine ever shows up, will probably test this as well.

Good choice on the oil. Ran Delvac1 on my 2013 for the first 100K miles. Now I use Rotella T6 cause the specs seem a little better, and it's made from natural gas. For the pressure difference, try going back to a factory filter at your next change and compare. You changed 2 variables (oil brand and filter brand) so hard to guess which one if any had anything to do with it.
Those are good possibilities. It's very possible that I did not try and goose it after 2000 miles as I was towing a 15k lb dump trailer from 1800 miles all the way until just before the oil change. And I'm not dumb enough to gun off the line with a trailer. The 2000 mile mark makes sense for an automatic tune change. Seems odd but smart on their part.

My 1st Ram: 2019 Laramie 3500
6.7 HO Aisin AS69RC. Borg Wagner 44-48 4x4. 12" AAM Rear end. CCLB. Single Rear Wheel. Max Steel. 295/70/18 (35x12) Mickey Thompson MTZ P3. No lift/no level.
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post #8 of 22 (permalink) Old 06-21-2019, 11:10 AM
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Every so often, to reward the select faithful, Mobil likely spikes random oil cases with Smarty nanoparticles.
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post #9 of 22 (permalink) Old 06-21-2019, 05:43 PM
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Just wait till the 2nd oil change. That is when my truck started doing wheelies
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post #10 of 22 (permalink) Old 06-21-2019, 06:24 PM Thread Starter
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Every so often, to reward the select faithful, Mobil likely spikes random oil cases with Smarty nanoparticles.
I walked right into that. And like I said, I would normally roll my eyes at this entire post. The lack of need for break-in got my attention initially. When I read that someone else experienced the increase in power I became curious, and when I noticed it myself, itís hard to ignore. But for the record, I truly know that No motor oil is gonna increase horsepower.

My 1st Ram: 2019 Laramie 3500
6.7 HO Aisin AS69RC. Borg Wagner 44-48 4x4. 12" AAM Rear end. CCLB. Single Rear Wheel. Max Steel. 295/70/18 (35x12) Mickey Thompson MTZ P3. No lift/no level.
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post #11 of 22 (permalink) Old 06-21-2019, 06:51 PM
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makes sense the factory tune would improve after a period of break in, and would be easy to do by Chrysler. To prove it, instead of changing the oil, just tell the computer you reset the oil.

I think it would work best if after 2000 miles, the computer boosts the tune regardless of an oil change.
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post #12 of 22 (permalink) Old 06-21-2019, 10:58 PM Thread Starter
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Originally Posted by sdowney717 View Post
makes sense the factory tune would improve after a period of break in, and would be easy to do by Chrysler. To prove it, instead of changing the oil, just tell the computer you reset the oil.

I think it would work best if after 2000 miles, the computer boosts the tune regardless of an oil change.
That makes the most sense. That it's based on mileage and not on the oil change at all. I think it was just a coincidence that I didnt notice the power boost until 3300 miles because I was make back to back runs to Detroit and back w/15k lb dump trailer loads of compost from about 1900-3100 miles. Then I changed the oil and probably tried gunning it off the line for the first time since 1900 miles.

My 1st Ram: 2019 Laramie 3500
6.7 HO Aisin AS69RC. Borg Wagner 44-48 4x4. 12" AAM Rear end. CCLB. Single Rear Wheel. Max Steel. 295/70/18 (35x12) Mickey Thompson MTZ P3. No lift/no level.
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