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I wonder how Mazda is handling this with 2011 owners. So far, I've had three dealer oil changes, each time was around $32 before taxes with the coupon, which stipulates a surcharge for synthetic. Is it that 2011 owners can't avoid the surcharge, or are they getting synthetic for the same price I'm paying for non-synthetic? If so, I definitely expect the same treatment, since I have the same engine as they...
At the dealership I'm working at, they are still working out the details. It looks like that the 2011 owers may end up paying a high cost for their oil changes. As to say how much more, I don't know until its finalized.
 
I registered on the official mymazda.com, specified my dealer. There are printable dealer-specific coupons there. I'm not sure how/why, but Mazda also e-mails me coupons from time to time. After taxes, it winds up being $37, but, I assume, the dealer also hits lube points and eyes things on the underside for problems, plus a free touchless auto wash, so it, meh, an OK deal.

I don't really want to pay more than about $30 (approx cost of 5qt motorcraft 5w-20 and mazda3 oil filter) for a change and if it gets too high, I will just do it myself, because I'm changing on the 'severe driving conditions' schedule of about once per 3000 miles (It's actually 10000km intervals for normal and 5000km intervals for severe, for recommended oil changes). I am observing the severe shedule for engine oil changes on account of dusty dirt roads and some pretty hardcore mountainous driving out here in the Denver foothills. Fortunately, I almost never short-cycle the engine, almost never drive less than 10 miles minimum. Everything out here is spread out... s'why I bought it Aug 3rd and am already approaching 8000 miles on the ODO. Probably overkill, but so far, I've gotten oil changes at 580 miles, 3400 miles, and 7100 miles.
 
Hello All. I have a 2011 S HB and I have never had to use anything other than 5W-30 in my prior cars. What is different about the 0w-20 that Mazda wants to put in my 2.5? Is it synthetic (something I have no experiance with)?
 
0w-20 is synthetic, and like most all synthetics, resists breaking down at the temperatures in your engine much better than fossil oils. It lubricates at cold startup sooner than 5w-20, and is a thinner oil than 5w-30. I have heard that the oil channels in the MZR L5-VE 2.5l engine are small, and so it's important to run the -20 weight oil for full lubrication in all operating conditions. While it's always best to go with what the oil cap / owner's manual says, the same engine in the 2010 MZ3 s Sport HB is spec'd for 5W-20, so it isn't the end of the world (and engine) if you run that, but I would never substitute 5w-30...
 
At the dealership I'm working at, they are still working out the details. It looks like that the 2011 owers may end up paying a high cost for their oil changes. As to say how much more, I don't know until its finalized.
hey where do you work maybe i will bring mine in and get the oil changed at $39.95 before you guys jackup the prices? also which oil is currently being recommended by mazda canada for the 2011 mazda3 sport GS 2.5L?
Thanks
 
Hello All. I have a 2011 S HB and I have never had to use anything other than 5W-30 in my prior cars. What is different about the 0w-20 that Mazda wants to put in my 2.5? Is it synthetic (something I have no experiance with)?
I would never substitute 5w-30...
Sigh...

The reason Mazda "recommends" a 20 weight oil is because of Corporate Average Fuel Economy (CAFE). A 20 weight oil will yeild slightly higher fuel economy (emphasis on slightly - as in maybe 0.2 MPG). However, this is enough to help Mazda with their CAFE numbers so it is what they recommend. A 20 weight oil has a lower film strength than a comparable 30 weight and does not protect your engine as well. Mazda does not care about this because you won't see any effects of the 20 weight oil until after your powertrain warranty is up - but the effects will still come.

If you look in ANY other market that the 2.5L motor is offered apart from the US, Mazda recommends 30 weight. Seems odd that just the US would need the 20 weight, right?

The first part of the oil grade (5W or 0W) simply refers to the viscosity (thickness) of the oil when it is cold. The second number is the viscosity when it is at operating temperature. You really don't need a 0W oil unless you are in extremely cold conditions (i.e. northern Canada and Alaska). It isn't necessarily going to hurt if you are in a slightly more mild climate, but it is not necessary. It surprises me that Mazda recommends a 0W no matter where you live.
 
Is the 2010 MZ3 filled with synthetic oil from factory?
It is not. Most likely a synthetic blend.

Sigh...

The reason Mazda "recommends" a 20 weight oil is because of Corporate Average Fuel Economy (CAFE). A 20 weight oil will yeild slightly higher fuel economy (emphasis on slightly - as in maybe 0.2 MPG). However, this is enough to help Mazda with their CAFE numbers so it is what they recommend. A 20 weight oil has a lower film strength than a comparable 30 weight and does not protect your engine as well. Mazda does not care about this because you won't see any effects of the 20 weight oil until after your powertrain warranty is up - but the effects will still come.

If you look in ANY other market that the 2.5L motor is offered apart from the US, Mazda recommends 30 weight. Seems odd that just the US would need the 20 weight, right?
While all of this may be true, there are many high quality 20 weight oils that can protect and lubricate the engine just as well. I don't claim to know all there is to know about motor oil and different weights, but as long as a quality oil is used and in the range of approved weights, I don't see the problem with 0w20, 5w20, or 5w30. Used oil analysis show that these weights usually all work fine in many of today's engines, barring that there are no other problems with the engine.
 
Sigh...

The reason Mazda "recommends" a 20 weight oil is because of Corporate Average Fuel Economy (CAFE).

If you look in ANY other market that the 2.5L motor is offered apart from the US, Mazda recommends 30 weight. Seems odd that just the US would need the 20 weight, right?
I'm having a hard time even finding a market with the 2.5l MZR L5-VE mazda3, much less a copy of the owner's manual. Not Japan or the UK, anyway. US manual says Mexico is 5w-20 too. I guess this must be why so many go synthetic-- with the expectation of a better protective film, it matters less whether you interpret the Mazda recommendation as being necessary for narrow oil channels (have another post open where this is opinionated) or superfluous for some bureaucratic regulatory shell game at the expense of their owners.

There isn't much consensus online; here's an opinion that the repeated used-oil-analysis of 5w-20 says it is "legit". Another that says any oil is fine if it's SAE grade 'SM' (or whatever your manual specifies). A whole pile of people with 0w-20 and 0w-30 synthetic. And me, I'm still learning a lot about cars, and even specifics like motor oils, but I can't interpret the controversy confidently. The manual does specify you can run 5w-30 if 5w-20 is not available. From what knowledge I've acquired, I'm still not sure what I'd do. I'd ask my dealer if it was okay, but they don't even know what the 2011s are spec'd to. :)

It's a shame the L5-VE is so new you don't get much anecdotal discussion of how the high-mileage ones held up with x or y oil. From all I can see, I might want to consider running 5w-30 in the summer months, but could probably not have to feel concerned about longevity on 0w-20, even in the dead of summer at high load?
 
I don't think using a full synthetic will hurt in any way. I purchased it in large quantity last fall, due to a $10 refund per 5 liter container (bringing it down to the price of regular oil). I figure I do drive in an environment with widely varying temps, plus I do drive in a more spirited fashion.

As for Europe, their service intervals are completely different from ours. Every 12,500 miles! Mazda - Mazda Service Schedule
 
the reason all car manufacturers are going for 5W-20 is because of fuel economy and the tolerances for these new engines are very tight due to recent advancements in machining processes... i would suggest using recommended oil because thicker oil might not lubricate the critical spots as well as thinner 5w-20...
 
It is the natural progression of engine development. Us oldies used to use 15-50, then 15-40, 10-30, 5-30, 5-20 and now 0-20. Engines last longer than ever. It is refinement of both the engine and oil. Maybe we should look forward to -5+5 in the future.
 
Maybe it's just me but I can see 0-20 for the winter months but even 5-20 makes me nervous in a hot climate like Florida in the summer months. I just feel like Mazda is sacrificing engine longevity for this corporate mpg race that's going on between the car manufacturers.
 
Ok I have to chime in here, i've researched oil quite a bit since buying my 3, never have I come across such discrepencies in what oil to use. An excerpt from Bob is the Oil guy made alot of things clearer. I know these are based on a 30w oil but in reality a 20 weight oil may be slightly negative than the 30w so if 30w is 10 @ 212F then maybe 20w is 9.8. Oil viscosity to on the bottle has nothing to do with the viscosity at operating temperate as one can see. Yes it does when it's cold but in all reality how much of a difference in viscosity is there between 30w and 20w? I'd probably say a .2 or .3 in viscosity not enough to warrant a potential sludge problem from using a 5w-30. I'll go by recommendations from the manufacture. They know best. Go over to Bob is the oil guy and read Motor Oil 101. It clears up alot of things, including this discussion.

Mineral oil:

Oil type...Thickness at 75 F... at 212 F...at 302 F

Straight 30..........250....................10..........3
10W-30...............100....................10........ ..3
0W-30..........There are none in this range......



Synthetic oil:

Oil type...Thickness at 75 F... at 212 F...at 302 F

Straight 30...........100...................10...........3
10W-30.................75...................10........ ...3
0W-30...................40...................10...... .....3
 
If it's a synthetic blend from factory then switching to conventional oil is not recommended, right?
Using conventional after synthetic or a synthetic blend is perfectly fine.

Going from conventional to synthetic is usually always fine as well, even with high miles. The only time I would worry about going back and forth is if the oil changes were not done regularly and the oil was left running longer than it should be. The detergents in many of the newer oils will clean out sludge build up if it exists and might expose leaking areas in the engine.
 
I miss changing oil on my cars myself. With the PT being so low to the ground, it would be a pain.

On my 3i I have free oil changes at the dealer, so I will just let them do it with the Mobil 1 synthetic.
 
Nice write up...

So this oil filter is just the metal canister, not a separate paper filter like on the 1st gen 3? That makes it much easier.
 
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