Recommended engine oil for Mazdaspeed3 is 5w20??? - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 39 (permalink) Old 06-25-2008, 06:27 PM Thread Starter
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Recommended engine oil for Mazdaspeed3 is 5w20???

I got a 15K maintenance service today for my MS3. The dealer used engine oil 5w20 on my car, but in the manual stated that it should be 5w30. So I emailed to ask Mazda Specialist for what is the recommended oil for MS3. Then I got this message.

"Thank you for your inquiry regarding the type of oil recommended for your 2007 Mazdaspeed3. The recommended oil is 5W-20.

Regards,
Tim
Specialist, Customer Assistance E-Business"

So, the manual is wrong? How do you think about this?
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post #2 of 39 (permalink) Old 06-25-2008, 06:29 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

they are all noobs. It's 5W-30
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post #3 of 39 (permalink) Old 06-25-2008, 06:58 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

it's a bunch of bullshit. basically, a batch of manuals were printed that had the wrong recommendation on them (5w20 instead of 5w30), so that "specialist" is probably looking at an outdated sheet.
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post #4 of 39 (permalink) Old 06-25-2008, 07:10 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

And, as I mentioned in another thread, the owners manual that you can download at the Mazda USA web site also states that 5W-20 is the correct grade for the MS3

2007 MS3 GT | 2004 X3 2.5 | 1995 318ti Club Sport | 1975 2002A | 1999 Wrangler Sahara | 1996 Speed Triple
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post #5 of 39 (permalink) Old 06-25-2008, 07:29 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

thats y im doing my own oil change

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post #6 of 39 (permalink) Old 06-25-2008, 07:46 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

My dealer(Kings Mazda, Cincinnati) gave me free conventional oil changes for as long as I own the car; I just bring 6 quarts of Mobil 1 5W-30 when I take it in.

2007 MS3 GT | 2004 X3 2.5 | 1995 318ti Club Sport | 1975 2002A | 1999 Wrangler Sahara | 1996 Speed Triple
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post #7 of 39 (permalink) Old 06-25-2008, 07:50 PM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

Bottom line it's not going to make much difference.

Well I'm with you fellers.
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post #8 of 39 (permalink) Old 06-26-2008, 01:33 AM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

[quote author=HitIt link=topic=115791.msg2419860#msg2419860 date=1214437823]
Bottom line it's not going to make much difference.
[/quote]

Actually, it can. And, I'd say if Mazda went through the trouble to make the DISI the only engine in its line-up that requires 5W30 versus 5W20, I'd say they decided it made a difference.

I'd guess that 5W20 was causing bottom end bearing wear because it is too thin for the strain put on our bearings.

[b]Kevin B
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post #9 of 39 (permalink) Old 06-26-2008, 01:53 AM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

even if mazda recommended it, I still would not put 5w-20 in my vehicle....I have worked on Toyotas and Hondas before that use 5w-20...man that thing is THIN!!! When it is draining out of the oil pan it feels like freaking water...nothing like 30 or 40 weight oil

Never ever will I put a 20wt oil in a high performance turbo car such as the mazdaspeed 3
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post #10 of 39 (permalink) Old 06-26-2008, 08:06 AM
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Re: Recommended engine oil for Mazdaspeed3 is 5w20???

Not another one.
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