What is considered "operating temp" of oil

[Quattro Pete]

Originally Posted By: Benzadmiral
Is that a "short trip" in cold weather?

I doubt it. Besides, you don't have 90 days of this non-stop. It may only be a few days here and there. I wouldn't worry.

 

[MNgopher]

I agree - that isn't a short trip in cold weather, and was mentioned, it isn't an every day deal in your climate.

For instance, I'd consider any day near 32 in December / January / February as a warm day!

 

[HKPolice]

According to Honda, oil operating temp is 80C

http://hondakarma.com/attachments/engine-oil-deterioration-monitoring-system-pdf.12590/

It's what they use to program their OLM.

 

[zray]

A short trip is when your thermostat doesn't open, or is open for less than a couple of minutes.

Z.

 

[Benzadmiral]

Originally Posted By: MNgopher
I agree - that isn't a short trip in cold weather, and was mentioned, it isn't an every day deal in your climate.

For instance, I'd consider any day near 32 in December / January / February as a warm day!

I'll trade you some of your winter for some of our summer. Say, 6 out of the 10 hot months we get.

And as ZRay said, "A short trip is when your thermostat doesn't open, or is open for less than a couple of minutes." Well, the Regal's temp needle moves, and the engine begins to throw heat, usually during the first two miles of my commute; and the thermostat is then open for about 15-20 minutes. So I'll file this under "Stuff Not to Worry About."

 

[Quattro Pete]

Originally Posted By: zray
A short trip is when your thermostat doesn't open, or is open for less than a couple of minutes.

Z.

To me, a short trip is when the engine doesn't remain at operating temp long enough to burn off moisture and excess fuel. In many cases this takes significantly longer than just a few minutes after the thermostat opens.

 

[147_Grain]

Generally speaking....short trips amount to excessive buildup of contaminants in the engine / oil.

From Mobil's Website (Quote):

Question: Should I follow the "severe" service oil change intervals mentioned in my owner's manual? Does Mobil 1™ offer specific benefits under these conditions?

Many kinds of driving conditions qualify your vehicle for severe service oil change intervals, and Mobil 1 is ideal for this service. Severe service conditions can include, among other things:

• Trips of less than 10 miles
• Driving in cold weather
• Idling for extended periods
• Stop-and-go traffic
• Pulling trailers/carrying heavy loads
• Driving in dusty conditions

Unquote

https://mobiloil.com/en/faq/product-faqs

 

[zray]

Originally Posted By: Quattro Pete
Originally Posted By: zray
A short trip is when your thermostat doesn't open, or is open for less than a couple of minutes.

Z.

To me, a short trip is when the engine doesn't remain at operating temp long enough to burn off moisture and excess fuel. In many cases this takes significantly longer than just a few minutes after the thermostat opens.


Longer, maybe. Significantly longer, I doubt it. Moisture in the oil is going to be gone very soon after oil hits 180, it certainly doesn't need an oil temp at or above boiling water (212) to do that.

Not sure where this excess fuel has accumulated you refer to ? If it made it past the rings and is mixed in with the oil, it's never going away until the oil is changed regardless of how long or short the trip is.

Z

 

[artificialist]

I always though operating temperature was determined by the car manufacturer and nobody else.

Some cars have thermostatic oil coolers. If you could know when that thermostat opens, you could know the oil operating temperature.

 

[zray]

Originally Posted By: artificialist
I always though operating temperature was determined by the car manufacturer and nobody else……."


well, if the engine isn'r ran long enough for the coolant thermostat to open, I kinda doubt that the engine operating temperature has been reached, by anyones standards.

I thought that was the thrust of this discussion, ie, how long does an engine have to be ran before the coolant or oil, or what have you, has reached the optimal level. It doesn't really mater what that number is, or "who" can legitimately determine that number. If the trip is so short that the coolant thermostat is not opening, then surely there can be some agreement that by any standard, the trip is too short for the engines benefit.

Z

 

[Clevy]

So I was reading a few articles at machinery lubrication thanks to the free subscription they offer and Shannow pretty much has temps nailed.
150f is ideal. Every 10f increase in oil temp halves the oils potential lifespan.

One of the articles has the focus on oxidization and they state in no uncertain terms that time in sump is irrelevant.
And they contradict blackstone in that they mention that as soon as tan and tbn cross they feel the oil should be changed,which I found interesting.
Though I do tend to believe the lab over a magazine article however it does make one ponder.........