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#4035323 - 03/11/16 09:23 AM Best synthetic for Mazda Direct Injection?
perryg114 Offline


Registered: 11/22/04
Posts: 75
Loc: Orlando, FL
I just bought a new Mazda 3 Skyactive with the direct injected engine. I know that there have been issues with carboned up valves with some DI engines. I have been using M1 in all my stuff with good results but I have noticed some carbon accumulation as a result of burnt oil with the M1. So should I continue to use the group 3 M1 or should I step up to group 4 or 5 oils? Is there a benefit or is it marketing hype? If I do abandon M1, what would be a good alternative that I can preferably get at Walmart? I don't want to get into a discussion about why Mazda sucks or why DI engines are the end of the world. I bought the thing so I have to live with it now.

Thanks

Perry


Edited by perryg114 (03/11/16 09:24 AM)

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#4035325 - 03/11/16 09:32 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
buster Offline


Registered: 11/16/02
Posts: 30408
Loc: NJ
I'd go with Mobil 1 AFE or EP 0w20. Both have a NOACK volatility of 10% and sulfated ash is around .8%. EP 0w20 is also 70% PAO.
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#4035332 - 03/11/16 09:43 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
double vanos Offline


Registered: 08/05/04
Posts: 1885
Loc: 5600 feet elevation, Arizona
Have you already torn into the Mazda for a look at the valves? What does Mazda spec for this engine?
FWIW my Ecoboost F150 has 95k miles and still runs like a scalded dog. I've been using Castrol 0w-40 in it for quite some time so I suppose the A3 rated oil has been suiting the engine just fine. Have no idea about my valve deposits other than to say if there are deposits, they haven't slowed my engine down one bit.
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#4035340 - 03/11/16 09:50 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
MCompact Offline


Registered: 07/21/02
Posts: 4112
Loc: KY
I ran M1 5W-30 in my 2007 Mazdaspeed 3 for over 158k miles with no deposit or wear issues at all.
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#4035351 - 03/11/16 10:05 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
buster Offline


Registered: 11/16/02
Posts: 30408
Loc: NJ
Mazdas don't appear to have deposit issues with their DI engines.
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#4035395 - 03/11/16 10:52 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
Stewie Offline


Registered: 02/03/15
Posts: 1383
Loc: Maple Syrup Land
Maybe you got a lemon.

I don't notice my engine running rich.

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#4035401 - 03/11/16 10:56 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
Eddie Offline


Registered: 12/07/03
Posts: 9563
Loc: Florida, Cape Coral
My Mazda cx5 runs just great. I run PP and OEM or Ultra filter with a 6,000 mile OCI. Ed


Edited by Eddie (03/11/16 10:58 AM)
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#4035419 - 03/11/16 11:21 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
CT8 Offline


Registered: 10/09/14
Posts: 10967
Loc: Idaho
What does the owners manual spec?
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#4035420 - 03/11/16 11:21 AM Re: Best synthetic for Mazda Direct Injection? [Re: MCompact]
Bottom_Feeder Offline


Registered: 12/07/08
Posts: 3009
Loc: Occupied Virginia
Originally Posted By: MCompact
I ran M1 5W-30 in my 2007 Mazdaspeed 3 for over 158k miles with no deposit or wear issues at all.

Which does not have a DI engine.

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#4035421 - 03/11/16 11:23 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
Bottom_Feeder Offline


Registered: 12/07/08
Posts: 3009
Loc: Occupied Virginia
Your driving habits and quality of gas you use will have much more effect on deposit buildup on a DI engine than motor oil will.

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#4035425 - 03/11/16 11:27 AM Re: Best synthetic for Mazda Direct Injection? [Re: Bottom_Feeder]
HemiHawk Offline


Registered: 03/09/16
Posts: 835
Loc: PA,US
Originally Posted By: Bottom_Feeder
Originally Posted By: MCompact
I ran M1 5W-30 in my 2007 Mazdaspeed 3 for over 158k miles with no deposit or wear issues at all.

Which does not have a DI engine.


I thought the 2.3L turbos were DI? https://en.wikipedia.org/wiki/Mazda_L_engine#2.3L_DISI_Turbo_.28L3-VDT.29

To the OP, where are you noticing the carbon build up?
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#4035439 - 03/11/16 11:39 AM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
perryg114 Offline


Registered: 11/22/04
Posts: 75
Loc: Orlando, FL
No I have not torn into an engine that I have had for about a week LOL.

Manual calls for 0w20 for this country but in other areas you can use 5W30. Any down side as far as wear running 0W20? I am more worried about engine life than MPG.

As far as driving habits, I am a lead foot. I have been running 89 octane from Kroger. I have thought about running Chevron. 13:1 compression ratio. Once I get it broke in, and have some mileage stats, I will try 87 and see if there is any decrease in MPG.

Perry

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#4035458 - 03/11/16 12:09 PM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
tig1 Offline


Registered: 01/03/09
Posts: 13660
Loc: Illinois
M1 is not grp 3. Mobil Super Synthetic is. M1 oils perform very well in high heat as the M1 5-30 has the HTO-06 Honda high heat low deposit spec.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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#4035460 - 03/11/16 12:11 PM Re: Best synthetic for Mazda Direct Injection? [Re: perryg114]
skyactiv Offline


Registered: 03/02/13
Posts: 4395
Loc: The Midwest
I'm thinking driving a vehicle hard equipped with a DI engine negates the formation of intake valves deposits.


Edited by skyactiv (03/11/16 12:12 PM)
Edit Reason: i suck
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#4035461 - 03/11/16 12:11 PM Re: Best synthetic for Mazda Direct Injection? [Re: Bottom_Feeder]
tig1 Offline


Registered: 01/03/09
Posts: 13660
Loc: Illinois
Originally Posted By: Bottom_Feeder
Originally Posted By: MCompact
I ran M1 5W-30 in my 2007 Mazdaspeed 3 for over 158k miles with no deposit or wear issues at all.

Which does not have a DI engine.


DI engines seem to be tech in reverse.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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