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View Full Version : Oil Change - My thoughts



Skarbro
06-07-2007, 07:01 AM
I've been meaning to write this for a few weeks now. I changed the oil myself on this car for the first time recently.

Side thought: A lot of people had their undercover shield cut to access the oil filter by a certain dealer. After looking at it objectively - if it is cut correctly, there should be no problems whatsoever. Granted I would be pissed if someone did that without consulting with me, but it doesn't appear to be a big deal. You're not exposing anything to any more danger.

Anyway, some of the bolts/clips on my undercover shield were rusting already (the car is not even a year old). On of the bolts needed some WD-40 to get loose. There is a TSB on these things, so if they are messed up too much, you should be able to get them replaced with new stuff. I just added all-purpose grease to them when I put them back on. This should prevent any further rusting.

I replaced the oil drain plug with my new magnetic drain plug. Fits perfectly! And since the block is aluminum, the magnet won't stick to anything on the way in (unlike my Corolla with an iron block! :bang)

I have the 2.3 with the cartridge oil filter. A lot of people are either afraid of changing it, or have switched to the spin-on filter by getting the housing for the 2.0 engine. After changing this once, I will NEVER switch to spin-on. It's so freaking easy to change the cartridge filter!

Now I have heard of some people changing it themselves and the plastic oil filter cover failing, causing oil to leak and eventually engine failure. Then the horror stories about how its not covered under warranty because you f'ed it up yourself. To these people, I say, LEARN TO READ AND LEARN TO USE A TORQUE WRENCH. If you follow the torque specs precisely, then there will be no problem. The torque specs for the cover and the oil filter drain are VERY light. Hell they are stamped right on the cover! Don't over-torque it any you'll be fine. Also, get yourself the PROPER oil filter wrench cap tool. I got the Mazda OEM tool - the exact same one the techs use at Mazda. If you get the proper tool, you will do zero damage to the plastic oil filter cover. If you use something that wasn't meant for it, I can see you messing up the plastic over time, eventually making it difficult to loosen.

And it's nice to see the actual dirty cartridge filter (as opposed to a closed spin-on). You can see what is happening as far as what the filter is catching in your oil - a definite plus on monitoring your engine's health.

Anyway, overall, the first time took me a little bit because I really took my time to do it right. Now after doing it once, I'm sure I can change it almost as quickly as any other of the billion oil changes I've done over the years on other cars.

If you're thinking about doing it yourself, just make sure you follow my warnings above. If you do it right, it's a piece of cake. :bana

MattC
06-07-2007, 11:48 AM
Good write up,

I was thinking about attempting this myself, just so i know how to do it.

It is almost worth the 20$ it costs to get someone to do it for you though.

again, good job.

Skarbro
06-07-2007, 03:31 PM
Yeah the dollar savings aren't huge. I just plain don't trust anyone to change my oil except for me. :)

EvilEric
06-07-2007, 03:36 PM
I think it is also worth mentioning that if your under warrenty you should still consider getting the oil change done in a a reputable shop. Otherwise you risk voiding said warrenty.

I know several members bring their own oil to dealers and ask for them to use that instead of the regular stuff.

MattC
06-07-2007, 03:40 PM
Im due for a oil change, I should think about bringing my own juice in there with me, at risk of getting owned by majic ill just search for what kind of oil i should get and not ask about it here :)

Skarbro
06-07-2007, 03:42 PM
I think it is also worth mentioning that if your under warrenty you should still consider getting the oil change done in a a reputable shop. Otherwise you risk voiding said warrenty.

Let me qualify that by saying you can't void the warranty by changing the oil yourself - as long as you keep all your receipts for the oil and filters, and you do it properly.

But like my example above, if you are an idiot and say if you over-torque and break the oil filter cover, then you will void the warranty because they will know it was you that f'ed it up.

Jetmech
06-07-2007, 11:49 PM
What oil are you using?

Skarbro
06-08-2007, 06:34 AM
What oil are you using?
Mobil-1 5w20 with Mazda OEM filters

JonsMazda
06-11-2007, 01:45 PM
I've been meaning to write this for a few weeks now. I changed the oil myself on this car for the first time recently.

Side thought: A lot of people had their undercover shield cut to access the oil filter by a certain dealer. After looking at it objectively - if it is cut correctly, there should be no problems whatsoever. Granted I would be pissed if someone did that without consulting with me, but it doesn't appear to be a big deal. You're not exposing anything to any more danger.

Anyway, some of the bolts/clips on my undercover shield were rusting already (the car is not even a year old). On of the bolts needed some WD-40 to get loose. There is a TSB on these things, so if they are messed up too much, you should be able to get them replaced with new stuff. I just added all-purpose grease to them when I put them back on. This should prevent any further rusting.

I replaced the oil drain plug with my new magnetic drain plug. Fits perfectly! And since the block is aluminum, the magnet won't stick to anything on the way in (unlike my Corolla with an iron block! :bang)

I have the 2.3 with the cartridge oil filter. A lot of people are either afraid of changing it, or have switched to the spin-on filter by getting the housing for the 2.0 engine. After changing this once, I will NEVER switch to spin-on. It's so freaking easy to change the cartridge filter!

Now I have heard of some people changing it themselves and the plastic oil filter cover failing, causing oil to leak and eventually engine failure. Then the horror stories about how its not covered under warranty because you f'ed it up yourself. To these people, I say, LEARN TO READ AND LEARN TO USE A TORQUE WRENCH. If you follow the torque specs precisely, then there will be no problem. The torque specs for the cover and the oil filter drain are VERY light. Hell they are stamped right on the cover! Don't over-torque it any you'll be fine. Also, get yourself the PROPER oil filter wrench cap tool. I got the Mazda OEM tool - the exact same one the techs use at Mazda. If you get the proper tool, you will do zero damage to the plastic oil filter cover. If you use something that wasn't meant for it, I can see you messing up the plastic over time, eventually making it difficult to loosen.

And it's nice to see the actual dirty cartridge filter (as opposed to a closed spin-on). You can see what is happening as far as what the filter is catching in your oil - a definite plus on monitoring your engine's health.

Anyway, overall, the first time took me a little bit because I really took my time to do it right. Now after doing it once, I'm sure I can change it almost as quickly as any other of the billion oil changes I've done over the years on other cars.

If you're thinking about doing it yourself, just make sure you follow my warnings above. If you do it right, it's a piece of cake. :bana


I think that you should be our TM3 oil change guy to goto...set a GB price :chuckle

Skarbro
06-11-2007, 02:55 PM
Heh... I could start a drive-thru service. I take all payment in beer.

Wild Weasel
06-11-2007, 04:16 PM
heh. Skarbro's Quiki-Lube.

I'd hate to be an alligator living in the storm sewer in front of your place... :chuckle