Ultimate torture of engine and engine oil?

[wwillson]

The carpet cleaner came yesterday to clean the carpets in our home. His vehicle was a full sized Chevy van with a 6.0L v-8. The vaccum pump was driven by the engine and I believe the engine was running at about 1500 rpm's. After the engine ran like this for about 2 hours I figured the oil temp must be sky high. I just couldn't resist so I crawled under the van with my IR thermometer and found that the oil filter was 270 degrees! Now keep in mind that this van runs the vaccum pump all day every weekday. I wonder how long the engine can last running like this?

Wayne

 

[Matt_S]

With a good synthetic oil, it would probably be OK. I'm sure they sell those vehicles before any real problems crop up, though.

 

[KW]

It seems like at 1500 rpm the motor would last a long time. Sort like a stationary generator. A good fan sure wouldn't hurt it.

 

[XS650]

I hope you cleaned yourself off before you walked on your clean carpets.

Did you tell the guy about the advantages of an oil cooler?

 

[Motorbike]

When we have pizza delivered I always ask how many miles the delivery driver goes a week .

Then I ask what engine oil they use " imagine that

" . The majority have said I use Castrol Synthetic

One said " I don't know , this is my girlfriends car "

 

[wwillson]

quote:

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Originally posted by XS650:
I hope you cleaned yourself off before you walked on your clean carpets.

Did you tell the guy about the advantages of an oil cooler?

---

My wife has assumed the position of carpet police, believe me....

I just didn't have the nerve to talk to the guy about his engine oil... I afraid he would have thought I was a freak!

Wayne

 

[Ugly3]

What is wrong with running an engine with an oil temp of 270 degrees? Many engines run at 220+ degrees normally. Oil flash points are generally 400+ degrees. 270 degrees may be a little high but sure does not look like a disaster is on the way.

 

[Patman]

quote:

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Originally posted by Ugly3:
What is wrong with running an engine with an oil temp of 270 degrees? Many engines run at 220+ degrees normally.

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I don't know about other cars, but I've owned a 98 Corvette for a couple of weeks now and the oil temps have never gone above 221F yet, and for the most part it sits right around 200F. Even if I drive it hard in short bursts the oil temp only changes by a couple of degrees and then comes back down. The only time it's gone close to 220 or slightly above has been when I've been stuck in traffic for a little while. I'd love to see what other cars run for oil temps though. Perhaps this car is unusual.

Although I do know that LS1 Corvettes without an oil cooler will run very high oil temps when they are road raced (300F or higher)

 

[tpi]

My '04 Camry 2.4 4 cyl. ran 229 degree F oil temps at 107 ambient, level road, 80 MPH.

 

[zoomzoom]

patman what was oil temp reading when going 100mph+ for a bit?

 

[dagmando]

The owners manual for my 1997 VW Passat VR6 I used to have said "normal oil temps" were up to 295* and not until then should you pull over and idle to allow cooling.

 

[Patman]

quote:

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Originally posted by zoomzoom:
patman what was oil temp reading when going 100mph+ for a bit?

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The other day I was driving along on the highway at 70mph for a while and the oil temp was 203. I put the hammer down and got up to 120mph and then let off, and it only climbed up to about 207. I'm sure if I drove at 100mph for a long period of time it might raise the oil temps, although then again my engine doesn't rev very high either (70mph equals 2000rpm)

The true test will be tomorrow afternoon, as I'm getting it dyno tuned. So I'll probably be having 5 or 6 dyno pulls made, all within a short period of time. By the end of the last pull the oil will probably be good and hot! I bet it goes over 250 for sure.

 

[zoomzoom]

let us know!

 

[zoomzoom]

hm I was just checking on my vis vs temp table....
that means that if you do get to 250 your GC will be weight 20 at 8.18 cst

 

[Patman]

quote:

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Originally posted by zoomzoom:
hm I was just checking on my vis vs temp table....
that means that if you do get to 250 your GC will be weight 20 at 8.18 cst

---

The scary thing is that a lot of C5 owners use Mobil 1 5w30 and run 300F oil temps too!

 

[Bobert]

quote:

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Originally posted by Patman:
The scary thing is that a lot of C5 owners use Mobil 1 5w30 and run 300F oil temps too!

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Mobil 1 5w30

cSt@100ºC= 10.0
Viscosity Index=167

[email protected]ºC(300ºF)= 4.41

 

[DJ]

quote:

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Originally posted by wwillson:

quote:

---

Originally posted by XS650:
I hope you cleaned yourself off before you walked on your clean carpets.

Did you tell the guy about the advantages of an oil cooler?

---

My wife has assumed the position of carpet police, believe me....

I just didn't have the nerve to talk to the guy about his engine oil... I afraid he would have thought I was a freak!

Wayne

---

He would not have though you were a freak he would have known.

You know you really had that comming. I think this should serve as a note to everyone do not buy old vacuum trucks

 

[Ryan00TJ]

The motor should be fine doing that assuming good oil and modest drain intervals. There is not much load on a 6.0L V8 at 1500rpms. Patman my 2.5L Wrangler running 15w40 usually stays at 180-220 degrees depending upon load and rpm's. Highway at 70mph @ 2900rpms will produce the 220 temps. Driving around town or at speeds lower than 60 it will stay at 180-195 max. My old marine 406SBC would stay around 200degrees at operating temp but after 8 secs of a 150shot of nitrous the oil temp would rise to 300+ degrees!! In 8 secs a 100 degree increase! After install of an oil cooler it would then only hit 265 max after spraying.

 

[TallPaul]

quote:

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Originally posted by KW:
It seems like at 1500 rpm the motor would last a long time. Sort like a stationary generator. A good fan sure wouldn't hurt it.

---

Probably would be very helpful to have the hood open while it sits idling.

However, I suspect the transmission fluid might get a bit overheated too.

 

[427Z06]

Typical 5w30 dino will be about 5.8cSt at 270F. That puts it right at the hairy edge of minimun viscosity needed for hydrodynamic lubrication. Let's hope he has shear stable oil in there.

Average 5w20 would be at 4.7cSt @270F, yikes!

[ August 19, 2004, 12:26 PM: Message edited by: 427Z06 ]