Date: Mon, 11 Jan 1999 19:06:36 -0000 From: "David Everson" <davidnopsam-ME-NOTbootsorion.demon.co.uk> Subject: Re: Any 300K miles engine around? Need real data...
Ken Washington wrote in message <369A3F8D.A93nopsam.net>... >Dave, > >You try to make a BMW sound like it is from another planet. The bottom >line is that it is an automobile that in most cases burns gasoline >(petrol) for fuel and uses oil as a lubricant. Take the wheels off and >weld on a hull with propeller, and you have a boat. BMW's, like anyother >car, truck, boat, plane or machinery is subject to wear from friction. But a boat often runs at a continuous engine speed and load, unlike a car engine which is subjected to continuous variable engine speeds and loads, as well as the fact that when the Navy DO service their boats, I would presume they get completely stripped-down and rebuilt, with all worn parts replaced. Not exactly an option for the average car driver. They often have shorter oil service intervals, for instance, my boat requires an oil change every 50 hours, which at average speed is about 200 miles (it's only a small fishing boat). My car requires an oil service every 6,000 miles. A bit of a difference, yes? Dave is right, oil manufacturer's do not intend their products to be used with additives, to the extent that many oils contain additives already (such as Castrol GTX Magnatec). Modern semi-synthetic or fully-synthetic oils do not degrade with time as much as old mineral oils do. They also retain their grade and viscosity at high engine temperatures better. -- from Dave :-) <davidnopsam-ME-NOTbootsorion.demon.co.uk> Make obvious correction to reply He who dies with the most toys... wins!
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