The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
But the oil has changed, ... (archive)

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]

Posted by Dan on July 07, 2000 at 15:36:56:

In Reply to: Frequency based on who pays? posted by Paul on July 07, 2000 at 15:13:10:

... the 2000's have synthetic. There are two reasons to change engine oil, a.) because oil breaks down under high temperatures over time and is no longer able to provide adequate lubrication, and b.) because particulates are not filtered out and can result in engine wear.

Regarding a.) Synthetic oil at 15k miles has better lubrication ability that regular oil when new.

Regarding b.) Synthetic oil doesn't hold particulates much better than regular oil.

So, I change mine every 10k miles because of the inability of the filter to contain the particulates.

With a new engine, I recommend chaging te oil at 3k the first time due to the large amount of highly abrasive content from the machining of cylinders and pistons.

If anyone wants to change synthetic oil earlier, there's no downside to it other than cost, but you are throwing your money away. If it makes you sleep better at night, then go ahead.

Follow Ups:

[ Follow Ups ] [ 5-series (E39) Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk. Logo © 1997 - 2018 Jump Internet Inc. All rights reserved.