A very imaginative topic this.To clear things up, I’m not saying that people can’t tell the difference between a smooth running engine and a rough running (misfiring) engine. I am saying that when people switch from one brand of oil to the next and claim that the engine is smoother and quieter, that it’s all in their heads, or they are comparing the hot oil with the thicker fresh cold oil. Switching between oils of the same viscosity won’t change anything. Going from a 2.7 HTHS oil to a 3.5, maybe, but not from one oil to another that has the same HTHS, and certainly not from mixing up two different brands
PUP's fall from grace over the last 10 years?
- Thread starter cammyfive79
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Don't make me break out the "I see dead people" / "I hear dirty motor oil" meme.
An interesting question for someone like Dave at HPL, would be to ask if certain additives or amounts of additives can quiet an engine or valve train. We know viscosity can and it’s probably what most people notice. I think certain types of valve trains may be more sensitive than others.To clear things up, I’m not saying that people can’t tell the difference between a smooth running engine and a rough running (misfiring) engine. I am saying that when people switch from one brand of oil to the next and claim that the engine is smoother and quieter, that it’s all in their heads, or they are comparing the hot oil with the thicker fresh cold oil. Switching between oils of the same viscosity won’t change anything. Going from a 2.7 HTHS oil to a 3.5, maybe, but not from one oil to another that has the same HTHS, and certainly not from mixing up two different brands
Whatever they put into their oil has a noticeable but good effect on the 5.7 HEMI’s MDS operation. Both @OVERKILL and I have noticed… no slight vibration anymore, I can only tell when it goes into 4 cylinder mode by the sound now. Before there was a very slight but noticeable to me vibration.
Nah, 3rd or 4th string at best.
Below Supertech.
Below Mobil 1.
Below Castrol.
Below all the HDEOs.
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I don't know... I kinda like those green jugs and gold labels better than those other ones.
I’m 3000 miles into my current change and it’s definitely smoother sounding than any other oil I’ve run regardless of if it was fresh. It’s not in people’s heads lol.To clear things up, I’m not saying that people can’t tell the difference between a smooth running engine and a rough running (misfiring) engine. I am saying that when people switch from one brand of oil to the next and claim that the engine is smoother and quieter, that it’s all in their heads, or they are comparing the hot oil with the thicker fresh cold oil. Switching between oils of the same viscosity won’t change anything. Going from a 2.7 HTHS oil to a 3.5, maybe, but not from one oil to another that has the same HTHS, and certainly not from mixing up two different brands
Supertech? Heck no. I’ll put it and Castro on the same level. Mobil 1 below those two. Mobil is always noisy. The Pennzoil and QS euro carry more approvals.
What was your basis again? YT? Google?
Did you not know there is a huge database in the sub forum? Unfortunately noise isn’t a data point that anyone pays attention to. Feel free to start logging, but expect folks to bring up basics like ear o meters and middle school scientific methods.
Even if some oils could quiet a valvetrain or sound different, there isn't any evidence that it means anything. I suspect if it did correlate with anything useful we'd have an ASTM or other standard test using it because acoustic testing is cheap. I bet molasses stops that Hemi tick for a bit
.The state got involved investigating potential child abuse and after months of research, they asked his parents to run oils with a good chunk of moly ... and based on the latest news, the kid is no longer crying! Isn't that amazing?
Agree 100%. Saw dust usually works the best.Even if some oils could quiet a valvetrain or sound different, there isn't any evidence that it means anything. I suspect if it did correlate with anything useful we'd have an ASTM or other standard test using it because acoustic testing is cheap. I bet molasses stops that Hemi tick for a bit
I’ll take ESP for $28.
Exactly what I use in everything.
What's your basis? Seems like anything someone recommends doesn't count. Is YT and Google bad data that you've been able to disprove? The VOA's of it show it light in the TBN department, mediocre in the additives department. Not sure you accept VOA's either.
Is there any evidence that it doesn't?
This would be the part where I wouldnt tell an airline captain how to fly, and you should probably take lessons in tribology.
Since when does a VOA show additives?
Yes, Mobil 1 and other “noisy” oils don’t produce any more wear via UOA and pass the same API and OEM tests. Again, acoustic testing is easy and cheap so if it really meant anything why aren’t labs or standards using it as a method?
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