[Blue Thunder]

Quote: Originally Posted by nonsequitur (original)

That's both helpful and interesting. I've cut the interval to about half.

I'd bet that most of the early are only now reaching the second schedule gearbox service, called Inspection II stateside. With 160,000 (mi?) on the clock, you may be able to give all kinds of careful comment about component life, wear points, rattles, failures, etc.

Gearbox and engine maintenance lubrication is a curious question now. It really isn't "3,000mi oil changes required" any longer. I've had oil company scientists laugh when asking about this subject. The new manufactured lubricants (they sure don't say "oil" any more) are simply better than the blended stock from an earlier time. The synthetics are even better than these.

If you disassemble any of these newer engines, internally they are the same as there were 30 years ago. When services were performed every 3k. With the exception of new aluminim engines, which in my experience only make for potential problems if you were to over heat them. As for oil and filter changes I always do this every 3k. Any any of these oil scientist that want my old oil to put into there car after 3k miles they can have it. I think the bulk of the high miles service interval is simply marketing to promote low maintenance to the first owner, knowing he/she will most likely trade it in after 3-4 years. I keep my cars longer.