On Thu, 15 Dec 2005 21:37:53 GMT, Gene Kearns
wrote:


Short oil change intervals are not a bad idea, at least you are
removing dirt and acids from the engine.

Short oil changes *can* be a bad idea.

Every time you start/service your engine, you have what is called "dry
run". This is when an engine is running, but proper oil pressure has
not been reached. Have you ever noticed how you oil light stays on a
few seconds more after an oil change? That is dry run, and its a
killer to an engine.

Our lab did extensive testing on the subject, and found that (of
course) engine with more dry run time had *significantly* more
wear/damage.

Think about it...change your oil every 5k...assume 2 seconds of dry
run for each change, over the course of 100k miles, that's 40 seconds.

Now change your oil every 1k...that's a whopping accrued dry run time
of 3 minutes and 20 seconds for 100k miles!

Anybody ever seen the inside of an engine after it has ran for over 3
minutes with no oil pressure? I have, and it aint pretty.

Listen to the engine manufacturer (not your lube store) and do NOT
over service.



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