I just purchased an 09 Sierra with the 5.3lt engine and my dealer and a few others say I should leave this "Break-in" oil in until 5000km's?
Is there such a thing as break-in oil, meaning can one purchase break-in oil or is that only a term used because the oil that is in it is the break-in oil?
Here's my thoughts, dump the oil, there is no such thing as break-in/special oil for breaking in an engine, get rid of it by a 1000km's or sooner, don't use synthetic until at least 6000 or so km's?? Am I right saying this?
I plan to also use Mobil-1 new car formula oil until the 6 or so thous K and then switch to Mobil-1 5W-30 for the rest of it's life? Good thinking or am I way off side here?
Also how accurate are the engine oil life systems on vehicles, can it truly tell when your oil is bad and needs to be replaced or are these systems just based on milage/hrs of opperation? Thanks.........Irv
Is there such a thing as break-in oil, meaning can one purchase break-in oil or is that only a term used because the oil that is in it is the break-in oil?
Here's my thoughts, dump the oil, there is no such thing as break-in/special oil for breaking in an engine, get rid of it by a 1000km's or sooner, don't use synthetic until at least 6000 or so km's?? Am I right saying this?
I plan to also use Mobil-1 new car formula oil until the 6 or so thous K and then switch to Mobil-1 5W-30 for the rest of it's life? Good thinking or am I way off side here?
Also how accurate are the engine oil life systems on vehicles, can it truly tell when your oil is bad and needs to be replaced or are these systems just based on milage/hrs of opperation? Thanks.........Irv