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Re: 1,000,000 miles? one million? (archive)

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Posted by Joe Ording on December 13, 2000 at 23:29:27:

In Reply to: 1,000,000 miles? one million? posted by Oleg on December 13, 2000 at 23:21:24:

Yeah, I remember reading about that. I believe what they do is put the car on a dyno and have machinery accel and decel the car to simulate typical driving. They also put a few actual miles on the car showing off their handy work. BMW does a similar thing when they test new cars, except that for the newer ones they have drive by wire, which eliminates the need for mechanical actuation of the gas pedal to accel/decel. They just do it with a computer.

I think it is a matter of personal perference. I agree that synthetics would handle extremes better with less of a propensity to break down.

However,I recall reading a Consumers Report on oil sometime over the last 1-2 years. They blueprinted engines on taxis used in NYC and compared differnet oils including synthetics. Pretty rough driving conditions with 24 hour operations with stop and go with quick accelerations at times. Their finding was that dirt causes wear. If you changed the oil and filter at reasonable intervals (they recommended 5000 miles) you should not have significant wear. They also stated that oils with similar SAE ratings should perform similarly.

Now this must be compared to the Mobil Oil BMW 3series car. Mobil blueprinted the engine, drove the car 1 million miles (not just on the Dyno; they drove it cross country a few times i.e.from NJ to Arizona for a car show as well as around town locally in NJ) and measured the wear after the million miles. They found insignificant, very minimal wear on the engine. Although I do not recall what the oil service interval was, this is a strong argument for synthetics.

I think it does not matter which oil you use and it is a personal perference but the key is to change the oil and filter often, maybe every 3-5000 miles. I use every 5000 miles since it is easier to remember.






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