Comments on: Oil and Filter Change

By: jason gardner

jason gardner — Tue, 08 Dec 2009 08:55:57 +0000

You need to get the engine up to operating temp before you drain the oil for one reason. Detergent engine oil holds “dirt” in suspension when it gets hot. When your engine is cold and not up to temperature, a considerable amount of filth in the oil stays on all of the internal components in the engine. When hot it cleans and removes the carbon and extra junk (to an extent) and holds it in suspension of the oil. The engine oil is dirtier when its hot, leaving you with a cleaner engine. If you drain it cold, of course it will still be filthy and look like hell but a significant amount of contaminants are still hanging out in your engine, just waiting to molest the new oil that you put in, there for shorting the service life immediately. Yeah, the BMW computer system isn’t going to know that either, same thing with GM oil service indicators. No indicator is better than a competent technician evaluation of the engine oil condition on the dip stick. If you cant find one competent enough to accurately diagnose that, please contact me, I’d be more than happy to share my knowledge.

By: salguod

salguod — Mon, 06 Jul 2009 18:49:33 +0000

I’d like to compare two sentences that occur back to back in the post:

“The best advice to follow as far as engine oil and filter changes comes from the folks that built your car. Every 3000-5000 miles or three months is conventional thinking.”

The first is more important than the second. That “conventional thinking” seems to come more from oil change shops and mechanics who have a vested interest in more frequent oil changes – namely they have boat payments due. My 1988 Grand Caravan, 1999 Honda Odyssey and 2005 Mazda3 S all recommended a 7,500 mile interval under normal driving.

I’ve heard that some, like BMW which has an on board computer that tells you when to change the oil, recommend changes at 10,000 or even 15,000 miles. Bottom line is the manufacturer knows better than the local oil change shop or even the dealer how often you should change your oil.

By: Kendall

Kendall — Wed, 01 Jul 2009 21:55:39 +0000

Most Auto Stores have containers in the back room for used oil. Just ask and they will usually take it free of charge. At least mine does when I changed oil last month for my Fit they told me walk to the back room and look for the big blue container that has oil all over it.

By: Turbobrick

Turbobrick — Mon, 29 Jun 2009 04:04:21 +0000

Great website for finding places where you can get rid of your automotive fluids, http://earth911.com/

By: Mike Bumbeck

Mike Bumbeck — Sat, 27 Jun 2009 01:15:14 +0000

I usually buy the oil in the five-quart containers, put ‘em in with the recycle, or bring ‘em back with the used oil.

By: Mad_Science

Mad_Science — Sat, 27 Jun 2009 00:56:14 +0000

Worth noting that many newer cars have underbody skiplates/plastic tray thingies that must be removed. This can be a bit of a pain.

What’s the Clunkbucket recommended disposal method for the actual oil containers?

I put mine in the home recycling bin, under the assumption that whatever process is applied to plastic items would do just as well to re-purpose the remaining oil residue.