Originally Posted By: Olas
In one way it doesn't matter because pumps are volumetric and you have an ADBV so oil is always at the bearing, but...
In my experience the feature can be turned off, though usually the map prevents the feature from operating below a preset temp (probably thermostat temp?) to prevent an excess of cold starts. This feature saves unnecessary wear on bearings, but in turn places more strain on the battery, alternator and starter motor.
To deal with the extra wear on these components they are bigger/beefier/overbuilt compared to conventional equipment, so they last 'long enough' but cost more to replace when they fail.
Ultimately, it depends how many miles you do to determine if the fuel saving outweighs potential associated costs..
Sorry for bringing up an old thread here, but this is the best answer I've been able to find to my question.
I am out looking for an Escape or an Edge with an EB 2.0 like I have in my ST. I keep seeing that in these two examples that they have auto start-stop "technology". Growing up in the 80's and 90's you never turned off a turbocharged car immediately when you reached your destination. You would wait for 10-30 seconds (or longer depending on the beating the car just took) for the turbo to spool down some and cool then turn it off. It seems to me the turbo in this EB 2.0 gets worked hard (it certainly does in my ST). When it is constantly being turned off and restarted with this auto start-stop, what is protecting the bearings in the turbo with no oil pressure? Is it really the oil filter ADBV holding at least some oil at the turbo's bearings in a turbo that is still spinning what, 50,000 RPM's or more when suddenly there is no oil pressure? Does anyone absolutely know what the auto manufacturers are doing to mitigate this lack of oil flow to the turbo over and over again? Is it really just the ADBV?
In one way it doesn't matter because pumps are volumetric and you have an ADBV so oil is always at the bearing, but...
In my experience the feature can be turned off, though usually the map prevents the feature from operating below a preset temp (probably thermostat temp?) to prevent an excess of cold starts. This feature saves unnecessary wear on bearings, but in turn places more strain on the battery, alternator and starter motor.
To deal with the extra wear on these components they are bigger/beefier/overbuilt compared to conventional equipment, so they last 'long enough' but cost more to replace when they fail.
Ultimately, it depends how many miles you do to determine if the fuel saving outweighs potential associated costs..
Sorry for bringing up an old thread here, but this is the best answer I've been able to find to my question.
I am out looking for an Escape or an Edge with an EB 2.0 like I have in my ST. I keep seeing that in these two examples that they have auto start-stop "technology". Growing up in the 80's and 90's you never turned off a turbocharged car immediately when you reached your destination. You would wait for 10-30 seconds (or longer depending on the beating the car just took) for the turbo to spool down some and cool then turn it off. It seems to me the turbo in this EB 2.0 gets worked hard (it certainly does in my ST). When it is constantly being turned off and restarted with this auto start-stop, what is protecting the bearings in the turbo with no oil pressure? Is it really the oil filter ADBV holding at least some oil at the turbo's bearings in a turbo that is still spinning what, 50,000 RPM's or more when suddenly there is no oil pressure? Does anyone absolutely know what the auto manufacturers are doing to mitigate this lack of oil flow to the turbo over and over again? Is it really just the ADBV?
