More oil confusion

[gfh77665]

No, more isn't necessarily better. GM's low pressure warning light switches were calibrated at 3PSI for many years. Nowadays, gauges are not true gauges, but "discreet" in that they display in a normal range at or above very low thresh holds.

One good example was the 2.8Liter V-6 engine which went through many iterations over decades. In it's early, carbureted form, 3 PSI was factory minimum threshold for the light to come on. My 1986 Pontiac 6000 station wagon had this engine, as did many vehicles produced in those days, including S10 pickup trucks.

As the years went by, the size displacement and fuel controls morphed into more modern v-6 engines in the Malibu and Impalas.

Longevity was never any issue due to the fact that upon rev up, the psi went up with the increase of rpm.

I disagree. The vast majority were triggered at 20 psi. This coincides with information that states "The ideal oil pressure varies depending on the car brand and model, but generally, the ideal oil pressure is between 25-65 PSI. Sep 9, 2020".

Use some deductive reasoning, if near zero psi was really good, then why would any vehicle have ANY warning lights or gauges at all?

 

[gfh77665]

To avoid further spread of misinformation:

What is low oil pressure and how to solve it?

The engine oil in your engine makes sure that all moving parts within an engine are lubricated and protected. When the oil is flowing through the openings within the engine, pressure is build up. This pressure makes sure that the oil reaches all parts and corners of the engine.

www.rymax-lubricants.com

What is normal engine oil pressure? | Jerry

Normal oil pressure is usually between 25 and 65 PSI. Read more here.

getjerry.com

What Causes Low Oil Pressure at Idle (Diagnosis and How to Fix it) - My Car Makes Noise

Think of oil as the lifeblood of an engine–no internal combustion engine can survive without it. Correct oil pressure within the engine ensures optimal

mycarmakesnoise.com

There are plenty more sources, concurring with each other. Easy to find.

 

[Travelin Ram]

That is amazing, that Google can support confirmation bias. Who’d have imagined that?

 

[gfh77665]

That is amazing, that Google can support confirmation bias. Who’d have imagined that?

I have no bias, like the previous posters who posted the misinformation. That's why I looked up factual information from multiple sources.

Its not confirmation bias, its ACCURACY, if you can understand that. You might as well quit while you are behind.

​

 

[huntergreen]

I have no bias, like the previous posters who posted the misinformation. That's why I looked up factual information from multiple sources.

Its not confirmation bias, its ACCURACY, if you can understand that. You might as well quit while you are behind.

​

Interesting, but along with your factual information, there are hundreds of videos showing other causes for cam lifter failure. Imho, if a higher oil pressure would fix this, the mfg would correct the oil pump. It’s been my experience that when multiple theories are offered, there is more than one contributing factor. Check out the synthetic oil thread and you’ll find some good info and why many folk use 5-30 redline.

 

[Sherman Bird]

I disagree. The vast majority were triggered at 20 psi. This coincides with information that states "The ideal oil pressure varies depending on the car brand and model, but generally, the ideal oil pressure is between 25-65 PSI. Sep 9, 2020".

Use some deductive reasoning, if near zero psi was really good, then why would any vehicle have ANY warning lights or gauges at all?

Read up on the law of hydraulics.... "Pascal's Law" You just might be enlightened!

 

[gfh77665]

Read up on the law of hydraulics.... "Pascal's Law" You just might be enlightened!

Instead of addressing me, you need to take your concerns to the manufactures. Quote "Pascal's Law" to them and try to get them to change the warning systems that their engineers have set up over the last 40-50 years. Tell them to reset their systems to a "6 psi" alarm level.

Let us know how that works out for you.

 

[HEMIMANN]

Interesting, but along with your factual information, there are hundreds of videos showing other causes for cam lifter failure. Imho, if a higher oil pressure would fix this, the mfg would correct the oil pump. It’s been my experience that when multiple theories are offered, there is more than one contributing factor. Check out the synthetic oil thread and you’ll find some good info and why many folk use 5-30 redline.

Yes, increased oil flow would likely help, but rightfully may not be enough help. It probably only helps the low flow @ low idle situation (Hemi low idle set @ 650rpm instead of legacy 750rpm, another miniscule fuel saving grab).

So many things could be wrong with this lube system! But there is direct evidence that high moly additized oils have killed Hemi ticking. Very strongly points at lubrication deficiency at least partially contributing to lifter roller and cam failures.

Especially since a failure analysis posted some time ago had cam & rollers checked and confirmed high hardness. i.e. - not a quality problem with unhardened parts.

 

[Sherman Bird]

Instead of addressing me, you need to take your concerns to the manufactures. Quote "Pascal's Law" to them and try to get them to change the warning systems that their engineers have set up over the last 40-50 years. Tell them to reset their systems to a "6 psi" alarm level.

Let us know how that works out for you.

GM training, from one of their engineers, taught me about Pascal's law. This is getting adversarial.... so I'll ignore you hence.

 

[CorDog009]

I’d rather deal with high flow vs high pressure. Ideally you want both to be adequate since you can’t have pressure without flow.