Forum Discussion
FishOnOne
Feb 10, 2019Nomad
ShinerBock wrote:FishOnOne wrote:
Most of your HD diesel engines now use steel pistons and is the major reason most can get 1 million miles without a rebuild.
There are many HD diesel engines that go a million miles and don't use steel pistons. The ability to go a million miles before an overhaul is generally not due to piston material. Worn sleeves and piston rings along with bent rods are generally causes of an overhaul in a million mile HD truck.
Also, one of the biggest factors in an HD truck making it to a million miles has a lot to do with how it is driven and of course maintained. An HD long haul truck that is on the road more often with minimal cold starts will easily get to a millions miles while the same truck used as a delivery truck with a lot of stop/starts will probably no get to a million miles before an overhaul.
I don't disagree with most of your comments but I do disagree that the steel pistons are part of the HD engines durability. They wouldn't install a more expensive piston if they didn't increase the longevity of the engine.
I believe these are the Mahle pistons going into the new Power Stroke since Mahle already provides the current aluminum pistons to Ford.
Steel Pistons
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