Anyone Know of Problems With Cat/Emissions Test Failures and High Phosphorus Oils?

[Ray H]

Thermactor, aggressive wild animals that have injured or killed humans or domesticated animals are generally destroyed because they've lost fear of hunting in human habitats and won't hesitate to repeat again for easy pickings.

 

[427Z06]

Wildlife, phosphorus and green elves, who would of thunk?

Had a Barred Owl kill a Opossum in my backyard a few days ago. A day later a Vulture came by and picked clean what was left.

 

[Gary Allan]

Sounds like a symbiotic clean sweep to me. Keep it tidy

 

[GoldenRod]

Originally posted by pscholte:

"Diese sind Öl für Benzinemaschinen"


I think what he is saying is: That he wants a good diesel oil to use for his diesel powered Mercedes Benz.

 

[Vilan]

I was looking up some emissions testing stuff and found this article from the local Aircare technician newsletter.

The Emissions and Oil Connection (scroll down, it's near the end)

Some interesting bits...

"Sulfur and phosphorus from the oil enter the engine through the PCV system. The more volatile components in the oil vaporize and carry these contaminants into the intake manifold. Most of this happens during the first 300-500 miles after each oil change, since most volatile components vaporize from the oil during that first 500 miles. So, changing oil more often will slightly accelerate sulfur and phosphorus loading in the converter and EGR deposit formation."

"Surveys have shown that the majority of technicians depend exclusively on brand loyalty, viscosity, and the term 'synthetic' in selecting engine oil. Brand names and synthetic claims are not reliable indications of anything."

"Many technicians select viscosity based on old habits instead of manufacturer recommendations... technicians often assume that thicker oil is required in warmer climates... replacing a 5W20 oil with a similar priced 5W30 oil will often cause a decrease in the oil's ability to cope with extended high temperature operation."

Discuss.

 

[C4Dave]

I suspect EPA's concern is the next generation of catalytic converters. They are more suspectible to contaminants. And its not a matter of "killing a cat", but of reducing its effectiveness. Just think if all cat converters were operating a 10% less efficiency how much pollution that would be.

 

[TomJones76]

quote:

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Originally posted by Vilan:
SNIP
"Sulfur and phosphorus from the oil enter the engine through the PCV system. The more volatile components in the oil vaporize and carry these contaminants into the intake manifold. Most of this happens during the first 300-500 miles after each oil change, since most volatile components vaporize from the oil during that first 500 miles. So, changing oil more often will slightly accelerate sulfur and phosphorus loading in the converter and EGR deposit formation."

"Surveys have shown that the majority of technicians depend exclusively on brand loyalty, viscosity, and the term 'synthetic' in selecting engine oil. Brand names and synthetic claims are not reliable indications of anything."
SNIP

---

Vilan,

Thanks for those links.
Hmm. Extended drains save cats, a little bit, but high TBNs tend to come with additives that kill cats.
Rough life being a cat nowadays, with 3000 mile intervals, barred owls and phosphorous all out to kill you.
I like the "can't tell what an oil is good for" quote. Sooooooo true. The only products where users have as hard of a time figuring out what good the product will be after you buy it are women and insurance.
I've never used them and may never start, but I like the small, high-quality blenders. With Amsoil, you KNOW what you're getting. Way more transparent than Castrol, SOPUS or even ExxonMobil. To a lesser extent, same thing with Redline.
I'm currently on a regime of keeping to non-HDEO API SM 5W20 oils, in part so I don't have to ever replace my cat. Papa bear can't 'ford no needless car repairs right now. Of course, in Ohio, it's just as likely the thing will rust through as get poisoned...

 

[LarryL]

Are you talking about the same EPA that gave us MTBE's? If so, we are in good hands.

 

[Winston]

From Vilan

quote:

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"Sulfur and phosphorus from the oil enter the engine through the PCV system. The more volatile components in the oil vaporize and carry these contaminants into the intake manifold. Most of this happens during the first 300-500 miles after each oil change, since most volatile components vaporize from the oil during that first 500 miles. So, changing oil more often will slightly accelerate sulfur and phosphorus loading in the converter and EGR deposit formation."

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Wow, an argument against short OCI. Hmm. For some anecdotal evidence I have over 160k on my vehicle and it just passed california emmisions. Original Cat and I do 7500 mile OCI.

 

[427Z06]

Well, here's one guy who claims his cat died.

http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=1;t=014883;p=1#000016

 

[pscholte]

quote:

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Originally posted by TomJones76:
Vilan,

Thanks for those links.
Hmm. Extended drains save cats, a little bit, but high TBNs tend to come with additives that kill cats.

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TJ76,

Have you noticed that the newer Euro oils tend to have lower TBNs even though they are still long OCI oils...maybe they are locking down the formula we need for long OCI, cat-friendly oils.