ESS (Electronic Start Stop) Issues

[H2OMAN]

But by that logic UPS and FedEx must be rebuilding their engines every year on their delivery trucks. Because I know for a fact that they shut their engines off every time they make a delivery and in residential delivery that could be hundred of times a day.

Yep those trucks go through motors.

 

[Jesusisgod]

Not doubtful. On a well maintained engine, almost exclusively engine wear happens at startup. Pretend it doesn't if you please.

i saw a study that uses radioactive tracer testing. which measures down to the micro gram of radioactive material. i believe they used radioactive piston rings. it showed the majority of wear happens between startup and when the engine reaches 160f. freedomworx on you tube did a video on this. in the video you can see the graphs, it sure looks like oil starvation is not the issue. since there is still wear happing minutes into the tests. i cant imagine an engine is starved of oil 5-10 minutes into run time.

so yes wear happens at start up but it should be said wear happens at startup and continues until the engine reaches operating temp. with that info id say that no extra wear to the engine occurs because the engine does not drop below operating temps in that amount of time. do i trust it? no i put one of that auto stop eliminators on my truck lol.

skip to 29 minutes

 

[H2OMAN]

That's interesting. I'll watch it this weekend. What did they say about lifters?

 

[Jesusisgod]

That's interesting. I'll watch it this weekend. What did they say about lifters?

i believe he addresses that under the statement of no one ever says yup our bearings are fried lets rebuild this engine, that its almost always the rings that cause people to have to rebuild one. i don't think he ever brings up lifters. I only have bits of info from the studies because i didn't buy them.

I'm not exactly sold on it being an oil issue being what causes our lifter problems. chevy has lifter issues to. I think its a low quality parts issue coupled with low oil pressure at idle. though that one channel on you tube. the ram high milage. that dude made it to 250k with no lifter problems( he hasnt posted any videos in almost a year now). His idle hours was super high, he did 10k oil changes, and towed constantly.


So my minds kinda stuck on if the lifters are gonna go they are going to because they was bad qc parts to begin with.

 

[H2OMAN]

i believe he addresses that under the statement of no one ever says yup our bearings are fried lets rebuild this engine, that its almost always the rings that cause people to have to rebuild one. i don't think he ever brings up lifters. I only have bits of info from the studies because i didn't buy them.

I'm not exactly sold on it being an oil issue being what causes our lifter problems. chevy has lifter issues to. I think its a low quality parts issue coupled with low oil pressure at idle. though that one channel on you tube. the ram high milage. that dude made it to 250k with no lifter problems( he hasnt posted any videos in almost a year now). His idle hours was super high, he did 10k oil changes, and towed constantly.


So my minds kinda stuck on if the lifters are gonna go they are going to because they was bad qc parts to begin with.

Good analysis.

 

[vincentw56]

i saw a study that uses radioactive tracer testing. which measures down to the micro gram of radioactive material. i believe they used radioactive piston rings. it showed the majority of wear happens between startup and when the engine reaches 160f. freedomworx on you tube did a video on this. in the video you can see the graphs, it sure looks like oil starvation is not the issue. since there is still wear happing minutes into the tests. i cant imagine an engine is starved of oil 5-10 minutes into run time.

so yes wear happens at start up but it should be said wear happens at startup and continues until the engine reaches operating temp. with that info id say that no extra wear to the engine occurs because the engine does not drop below operating temps in that amount of time. do i trust it? no i put one of that auto stop eliminators on my truck lol.

skip to 29 minutes

That's why I think it's really doubtful. The confusion is between cold starts and warm starts. There's no way enough oil has drained away enough in the time the engine is stopped at a stop light.

 

[Snekpete]

Freedom Worx has some good videos, quite interesting. I also enjoyed the CAI vid.

He makes clear that there are two types of engine wear, bearing wear and ring/cylinder wear. As he states, I've never had a bearing problem on any new car that I've bought, and he's right, I could probably go from 5,000 to 7,500 or 10,000 mile oil changes with no measurable effect on bearing or ring wear. But I only drive each vehicle, I have two, about 5,000 miles a year so I'll stick with once yearly oil changes.

Most ring wear occurs, apparently, when the engine is cold. MDS and ESS both cause the rings and cylinders to cool. MDS is probably the worst. I would expect a small amount of ring/cylinder wear from both with no effect on the bearings. Enough to lose sleep over? No, the engine will still last hundreds of thousands of miles. Something else will break long before a bearing or compression problem.

Camshaft wear? Who knows, I'll lump it in with bearing wear, but I've never had a cam lobe fail on any vehicle, even on the two Lycoming airplane motors that I've had, the cams were not an issue.

Are CAIs worth it? A resounding no, the same effect could be had by replacing the stock air filter with a less restrictive one that let's through more dirt. I watched guys cut the screen out of the intake on induction systems thinking that the screen restricted airflow. The screen actually increases airflow by reducing turbulence. A dirty air filter filters more dirt than a clean one? Fine, I don't change them very often anyway. I just bought new air filters and fuel filters for my Fords. Turns out the Mustang doesn't even have an inline fuel filter, just a screen mesh inside the tank.

I still believe that clean, fresh oil is the best insurance against premature engine failure. Freedom Worx acknowledged that 0W-10 oil is only used for meeting CAFE standards.