quote:
Originally posted by Baveux:
-*-*
Gm wearing faster or what ??? Geez I've seen lots of GM engine with lots of milleage
My opinion is that it's all relative to the nature of the environment AND design AND materials within the engine. I think that ALL engines, if designed without a flaw, have "X" amount of life in them.
Now, if every engine has "X" life in them, it's up to the envirenment / oil / maintenance / etc. given to it to extend it's life.
My point, is I think every TYPE of engine has its own signature of WEAR metals just because it has different metalic parts in different quantity.
Then, I also think every motor within the engine TYPE, has its own wear levels, although close.
It's the SECOND or the individual motors wear that we need to TREND. There's already a so called "standard" of known wear metal levels that is BAD, no matter what engine youre in, but it needs refinement and adjustment etc, to get the MOST useful life.
This is what I mean:
"X" life would be if for instance we changed the oil every 500 miles or 1K or whatever.
Anything OVER this number decreases the life of the motor, albeit VERY VERY little. Naturally "driving" conditions affect the issue and so does Quality of oil, and so does OCI.
So, IMO as long as OIL burn is low, and oil is fairly clean (????), then it doesn't matter what the numbers are, as long as it doesn't go OUT of the TREND.
But what if it does? And what happens if after say 300K or 350K or 400K or whatever the number, the motor shows signs of faster wear? Say two or three times before.
If it starts wearing faster, but "well within" a good range, is this GOOD still, and is this the new trend? If this does happen, WHEN should it happen, at what mile ? And if this does happen, does this mean the motor is at "Z"% (????) of its useful life?
Anyway, these are some of my vast things I think about EVERY DAY while working, it helps pass the time.