How many hours, can oil endure?

[ziggy]

Here's a somewhat interesting question...
I once heard, years ago, dino oil can go to about 50 hours of use, while a FULL synthetic, can go 1,500. Any truth to this?

 

[simple_gifts]

probably not. 50 hours x 50 miles per hour = absurdly low OCI.

 

[MolaKule]

Now think about it ziggy, what are the conditions under which each are used?

Clean vs dirty engines;
atmosphere - dusty or clean; dry or moist; temps, -20 below or +95 F?

What is the base oil, additive package?

 

[Cutehumor]

this is constant driving, highway conditions?

 

[maximus]

Originally Posted By: ziggy
Here's a somewhat interesting question...
I once heard, years ago, dino oil can go to about 50 hours of use, while a FULL synthetic, can go 1,500. Any truth to this?


Aircraft engine oil is typically supposed to be changed after every 50 hours of operation. Aircraft engines are alot "dirtier" than modern automobile engines, though.

 

[posty]

OCI for a kohler motor that has an oil filter is 100 hours. The oil in an air cooled motor like this might get more of a workout than a car motor.

 

[ziggy]

The conditions, would be sub city, stop n go traffic, moderate dirty and clean sometimes, 10 mile trips.

 

[Dyoel182]

Originally Posted By: ziggy
Any truth to this?


Nope.

 

[Doug Hillary]

Hi,
realise this is a PCMO thread but in stationary hi/lo load light petrol/diesel engines I have had UOAs done leading to standardised OCIs at around 1500-2000hrs. The maximum I have run a synthetic lubricant to in that environment is 3500hrs

In high speed heavy diesel engines on synthetic lubricants I have had standardised OCIs at around 1200hrs. Maximum at condemnation point (soot @ 4%) was 1700hrs

I have no further experience with petrol engines on this basis

Regards
Doug

 

[dnewton3]

You can't generalize a product's life cycle until you define the environment it is to operate in.

Lubricant's, in their many forms, can be used in many, many engine configuations and enviroments. Engine's, on the other hand, typically are selected for particular operating criteria specific to the load.

So, a vehicle manufacturer designes an engine (or family of engines) based upon expected use (car, SUV, truck, high performance, lawn tractors, aero engines, etc., etc.) and then they choose an oil (not a brand) that meets the desired characteristics (typically viscosity, temp range, etc.) to keep that engine in service for the expected design use.

While you can make certain assumptions based upon a manufacurer's stated/marketing implications, you CANNOT just white-wash an entire industry and it's products by saying "oil" will last "xxxx hours or miles".

This thread is the exact reason that UOA's exist.

 

[PT1]

Originally Posted By: ziggy
Here's a somewhat interesting question...
I once heard, years ago, dino oil can go to about 50 hours of use, while a FULL synthetic, can go 1,500. Any truth to this?


If you are talking about my boat...50 hours is fine 1500 is certain death to the engine.

 

[va3ux]

Yea there's no way any oil would survive 1500 hours in an internal combustion engine.

When I was doing 3K mile OCI on regular dino, with the amount of highway driving I do, I'd say that I perhaps had 60 - 80 hours on the oil. A car driven all city or short trips - that same 3K miles could take easily take up a 2 or 3 hundred hours operating time.

 

[sHERM]

Originally Posted By: ziggy
Here's a somewhat interesting question...
I once heard, years ago, dino oil can go to about 50 hours of use, while a FULL synthetic, can go 1,500. Any truth to this?


But, If you go 90 miles an hour the OCI will be extended,,,, So just driver faster and save money !!

 

[Roger]

The owners manual for my 1995 Ford E150 van said to change the oil evey 5,000 miles, or every 200 hours where the van was used in service or delivery capacity and encountered extensive idling. To be accurate an hour meter would be required which my van did not have. So I followed the mileage recommendation.

 

[Delphi]

Originally Posted By: ziggy
Here's a somewhat interesting question...
I once heard, years ago, dino oil can go to about 50 hours of use, while a FULL synthetic, can go 1,500. Any truth to this?

It makes no sense to me either way. If you would run on a synthetic for 1,500 hours at an average speed of 30 miles per hour, would the oil last for 45,000 miles?

1,500 hours would also mean two years of oil life, if you would drive two hours every day of the year.

 

[lars11]

Ok, here is a range based on oci by the manual:
- My boat, 5.0l V8 Dino 15w50: 50 hr/1 yr
- The Jeep, avg speed 40mph/5000mi OCI semi synth: 125hrs appr.
- The Peugeot, avg speed 40/18500mi OCI full synth: 450 hrs appr. (will do an extra on the Peugeot)

I think 50 hrs is a low end for basic/any oil, in severe environment and hi strain on the equipment, like in a boat. Bad air filters, high loads.
A couple of hundred hours is normal. Over a 1000 hrs is for very special conditions for a combustion engine. Truck multi filtering and large sumps, no cold starts, long periods of medium load.

 

[Jim Allen]

Both my farm tractors have 100 hour/1 year oil change intervals. The old rule of thumb was that 1 hour equalled about 60 miles. Both tractors are old (one 38 and the other 19 years old, so they came from the age of dino for sure. And not as good as today's dino, either.

 

[Eddie]

There is no answer that covers all engines. Much depends on engine design, environment, time at max loading, temperature and and and.

 

[Gary Allan]

Fuel usage.

 

[Junior]

FWIW, the recommended interval for a lot of ag and construction equipment is from 300 to 500 hours.