Engine hours vs miles

[BMWTurboDzl]

IMO engine hours is less than ideal for light duty cars/trucks. Simply put there are more accurate ways to do it.

"A novel microacoustic device determines the viscosity. This device utilizes the piezoelectric effect to electrically excite high-frequency mechanic (or acoustic) vibrations at a sensitive surface. When this sensitive surface comes into contact with the oil, the electrical device parameters, such as oscillation frequency and damping, are changed according to the oil’s mechanical properties, especially viscosity. Thus, the viscosity can be electrically detected by measuring these parameters. In contrast to conventional viscometers, which are commonly used in laboratory applications, the microacoustic sensor does not contain any moving parts. Furthermore, due to its small size, it can be easily incorporated into the multifunctional oil-level and condition sensor."

Pinging @kschachn to read this. A sensor which can determine viscosity!

https://www.machinerylubrication.co... of oil,the capacitance measures this change.

 

[otis24]

Although I know we shouldn’t, I look at how many miles a used vehicle has on it when I am considering purchasing it. My thoughts/concerns are “does engine hours give a better indication of use/wear/tear than miles ?”. If so, how many miles does one engine hour equate to (ball park) ? I know that this isn’t a great indicator either if you don’t know how many hours were hiway/town/idiling.

 

[Number_35]

IMO engine hours is less than ideal for light duty cars/trucks. Simply put there are more accurate ways to do it.

"A novel microacoustic device determines the viscosity. This device utilizes the piezoelectric effect to electrically excite high-frequency mechanic (or acoustic) vibrations at a sensitive surface. When this sensitive surface comes into contact with the oil, the electrical device parameters, such as oscillation frequency and damping, are changed according to the oil’s mechanical properties, especially viscosity. Thus, the viscosity can be electrically detected by measuring these parameters. In contrast to conventional viscometers, which are commonly used in laboratory applications, the microacoustic sensor does not contain any moving parts. Furthermore, due to its small size, it can be easily incorporated into the multifunctional oil-level and condition sensor."


https://www.machinerylubrication.co... of oil,the capacitance measures this change.

I wonder if the algorithm works properly if a different oil viscosity is used. Maybe it measures that upfront and then looks at the change over time.

 

[Fordiesel69]

What is the equation to convert engine hours to miles. I’ve read to conflicting stats. One says multiple hours x30, one says x60? Which is correct???

1 idle hour equals = 33 miles.

Total run hours have no real conversion as it is (key on crankshaft turning) on most IPC's.

For typical use you should see 3000 ~ 5000 hrs for every 100,000 miles. And 250 ~ 600 idle hours for every 100,000 miles.

 

[Sumboodie]

What is the equation to convert engine hours to miles. I’ve read to conflicting stats. One says multiple hours x30, one says x60? Which is correct???

40 is what we use. 250hrs is 10k miles. Granted just an estimate.

 

[Sumboodie]

Although I know we shouldn’t, I look at how many miles a used vehicle has on it when I am considering purchasing it. My thoughts/concerns are “does engine hours give a better indication of use/wear/tear than miles ?”. If so, how many miles does one engine hour equate to (ball park) ? I know that this isn’t a great indicator either if you don’t know how many hours were hiway/town/idiling.

Yes.

Like my truck at work has about 25k miles, but over 11,000 hours.

Drove one this spring with almost 40k hours and under 100k miles.