Automotive

Does Mazda 5 need synthetic oil ?

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  • Aug 5th, 2021 2:55 pm
[OP]
Deal Fanatic
Jun 7, 2005
9646 posts
1104 upvotes

Does Mazda 5 need synthetic oil ?

I was using synthetic oil for the 2012 Mazda 5 in the first 2-3 years . I switched to another garage later on and they told me it is ok to use regular oil, and have been using regular oil since then. Now, I am moving to another garage which is closer to home and they say they go by user manual, and it says Mazda5 requires synthetic oil. Should I switch back ? Honestly, I didn't experience anything when I am using regular oil.

Thanks for any advice.
20 replies
Sr. Member
Sep 25, 2018
926 posts
1815 upvotes
Just stick with synthetic as per user manual.
Deal Fanatic
Sep 1, 2004
8860 posts
7896 upvotes
The question is, what interval were you changing your oil at when you switched to regular oil?

Given the age of your car, I don't think it matters going forward. If you run into engine problem, it's a write off at this point anyway.
Deal Guru
User avatar
Sep 3, 2003
12804 posts
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Toronto
Stick with what the owner's manual says. Considering they specifically spell out synthetic, just do that.

Supertech full synthetic at Wal-Mart is a great value (often under $20 for 5L), and meets your use case very well. Doesn't cost much more than conventional oil.
Deal with it.
Deal Addict
Sep 22, 2009
3211 posts
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Markham
Read your owner's manual!!!
Deal Expert
Mar 23, 2004
32855 posts
14569 upvotes
I'm not even sure who would use dino oil in this day and age, unless for an old junker or beater... I haven't touched that stuff since like 1997 lol.
Deal Guru
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Mar 13, 2004
12923 posts
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Ontario
Synthetic oil is better at many things when compared to regular oil & considering the manufacture requires it you should of always used it. It may be an older car now but really Oil is the blood of the engine and if you want to prolong the engine has give it a big more protection its worth the price increase. Also google benefits Synthetic oil & you can decide for yourself.
Deal Addict
Oct 1, 2015
2448 posts
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Barrie, ON
ES_Revenge wrote: I'm not even sure who would use dino oil in this day and age, unless for an old junker or beater... I haven't touched that stuff since like 1997 lol.
Most people are probably running a semi synthetic (Group III) and don't even realize it :)
Deal Expert
Mar 23, 2004
32855 posts
14569 upvotes
mxthor3 wrote: Most people are probably running a semi synthetic (Group III) and don't even realize it :)
Well yeah but at least a Group III oil--most "synthetic" is Group III these days anyway. PAO doesn't mean as much as it used to either. Oil tech has moved forward so far since the days when only Group IV oils were marketed as synthetic; GTL-based Pennzoil Platinum, for example, is Group III but that doesn't change the fact that it's an excellent motor oil.

What I mean is like old skool oil like Castrol GTX, and stuff like Havoline, Valvoline, Quaker State, some-other-line, and such lol--like your
dad's oil (or possibly grand dad's). Like not the synthetic versions of those but like the regular old-skool variety from back in the day. No one that has a newish car or even an older one that's been well maintained and cared for, should be using this kind of thing.
Deal Expert
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Jan 27, 2006
19259 posts
2943 upvotes
Woodbridge
Personally, to me it's a peace of mind, knowing I'm getting the best protection.

My Amsoil cost me about $170 for a case that gives me three oil changes, DIY.
"I'll put up color bars before I'll put you in front of our cameras."

- MacKenzie
THE NEWSROOM (HBO)
Deal Expert
User avatar
Feb 8, 2014
25156 posts
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Socially Distanced
You can't change anything so i'd just go back to synthetic and consider it a learning experience.
Next time read the manual after you come home with the car.

As for the its a write-off comment :rolleyes:
In fact in Rand McNally they wear hats on their feet and hamburgers eat people
Deal Expert
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Feb 8, 2014
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Socially Distanced
UrbanPoet wrote: The good thing about driving an EV is you don’t have to worry about what type of oil to use.
But you need to replace its blinker fluid and muffler bearings all the same Winking Face

And the batteries only last 3-4 years. Not to mention the price of electricity is 5x the price of gas, creates 4x the emissions and is what Bill Gates wants you to drive Smiling Face With Open Mouth And Smiling Eyes
In fact in Rand McNally they wear hats on their feet and hamburgers eat people
Deal Guru
User avatar
Sep 3, 2003
12804 posts
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Toronto
UrbanPoet wrote: The good thing about driving an EV is you don’t have to worry about what type of oil to use.
There's still the coolant that most EVs still use, that will need to be serviced periodically. Then brake fluid, etc.
Deal with it.
Deal Addict
Sep 22, 2009
3211 posts
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Markham
Why is EV coming into this topic? Seems like EV always find a way into threads not about EVs....
Deal Addict
Mar 30, 2010
2978 posts
1311 upvotes
GTA
Cheap insurance, plus the Mazda5 updated from the 2.3L engine that had an oil cooler, to the 2.5L engine that does NOT have an oil cooler anymore...
Deal Fanatic
User avatar
Mar 7, 2007
5347 posts
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UrbanPoet wrote: The good thing about driving an EV is you don’t have to worry about what type of oil to use.
You still have to pay, no matter what.

Car and Driver says:

"Our Tesla Model 3 Hasn't Delivered Big Savings in Maintenance Costs
We've also spent serious money on windshield, roof, and tire replacement."

https://www.caranddriver.com/reviews/a3 ... intenance/
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Deal Fanatic
Sep 16, 2004
9779 posts
2031 upvotes
Toronto
I've read that switching to synthetic on older cars, especially after using dino oil, does such a great job of cleaning out all the built up crud, especially around seals, that it leads to leaks.
Not sure if this is true

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