John, that is pretty high mileage for a gasoline engine, and maybe any other smaller engine. But there is an effort on the part of auto manufacturers to acheive a very high mileage life. Somewhere in the last few months I saw a small article in a newspaper or magazine about this. I think the target was 100,000 miles before anything at all had to be done to the vehicle, but most especially the engine. Maybe they will achieve it.

It is interesting to note that on other fronts in the engine driven world, high mileages have been achieved. Specifically the trucking industry. My brother-in-law is an independent trucker and keeps 5 tractor and trailor rigs on the road. The trucks he buys carry a one million mile warrenty. This has gotten to be a standard in the trucking industry.

Also witness the revolution that took place in the aviation industry with the advent of the turbine aircraft engine. The airplanes cover millions of mile, representing thousands of hours of operating time between engine overhauls, all because of improving technology.

As the technology improves, so will the life of the vehicle. Unfortunately, as the vehicles improve the ability of the shade tree mechanic to work on them will decline. It will simply get more complex, and require more complex and sophisticated tools.

Just my two centavos.

John Rodgers
Birmingham, AL USA
 
 

It is in

John P wrote:

300,000 miles, that translates to aprox 480,000 kms,  I do not beleive that
that is a reasonable mileage to expect from any vehicle engine with out
major repairs required.
This would be almost unheard of in New Zealand.