The case for filling your new oil filter with oil before installing it.

Dear Car Talk

Dear Car Talk | Mar 01, 1999

Dear Tom and Ray:

I was hoping you guys could help settle a bet I have with a know-it-all at work. First, I should tell you that this guy is an egotistical jerk, and he is never wrong (according to him). I was telling him how I always fill a new oil filter with oil before installing it. I heard somewhere a long time ago that it is better for the engine during the initial start up following the filter change. He laughed about that and said the amount of oil in the filter is so small that it doesn't matter. I have agreed to do his next oil change if you side with him. He has agreed to do likewise if you side with me. Now, if I am right, please print this letter. I would love to see this guy eating crow. But if I'm wrong, please don't print this letter, because I don't think I'll be able to stand working with this guy if he's right. Thanks. -- Barry

TOM: Well, Barry, we're printing your letter, and you know what that means, don't you?

RAY: You're right! And that egotistical jerk is wrong! I've found that egotistical jerks are almost always wrong, isn't that true, Tommy?

TOM: Yes, we are.

RAY: When you change the oil, you drain the old oil out of all the passageways in the engine. And before those passages can be refilled, the oil pump has to first fill up
the oil filter.

TOM: So when YOU fill up the oil filter in advance, you allow the oil pump to skip that step, and let the really important parts of the engine (like the bearings) get oil
that much more quickly.

RAY: And it DOES make a difference. We fill up the filters at our garage (especially when we change the oil on our own cars!), and when you start a car after a filter
change, the oil light goes out in about half the time (two or three seconds instead of five or six). So when E.J. (egotistical jerk) changes your oil, keep a close eye on him
to make absolutely sure he fills up your filter before restarting the engine, Barry.

It's NEVER cheaper in the long run to buy a new car. Want proof? Order Tom and Ray's pamphlet "How to Buy a Used Car: Things That Detroit and Tokyo Don?-t
Want You to Know." Send $3 and a stamped (55 cents), self-addressed, No. 10 envelope to Used Car, PO Box 6420, Riverton, NJ 08077-6420.

?(C) 1999 by Tom and Ray Magliozzi and Doug Berman
Distributed by King Features Syndicate, Inc.

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