Switched to 5W-30 from 0W-20
- Thread starter Chocolate
- Start date
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- 2019 CX-5 AWD
"Better" is subjective.
Better for 1 extra mpg, yes, better for a quiet drive, no. Regardless of brand, like you said in post #5, 0W-20 "drains like pure water". I hadn't even considered that point when I switched, but it is very true. At the end of the oil change interval with 0W-20 it is visually evident that the oil is completely worn out. Much prefer the way 5W-30 has held up over the oil change interval.
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
I would say that objectively it's not better because it doesn't meet the latest specs. The best oil will be ILSAC GF-6A and API SP rated.
www.api.org
Oil Categories
The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry.
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API said:
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Not true. This is from a couple of years ago. 7k miles on the oil and viscosity is right where it should be and there are plenty of additives left"Better" is subjective.
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- 2019 CX-5 AWD
Not true. This is from a couple of years ago. 7k miles on the oil and viscosity is right where it should be and there are plenty of additives left
Well, that is just my impression based off the way the oil looks and drains. The remaining viscosity is perfectly acceptable, but it's lower to begin with and towards the lower end of the range once it's been used. Either oil will protect the engine properly over the rated oil change interval, which is why both oils are rated acceptable by Mazda for use in this engine. I really just prefer 5W-30 because it's so much better at insulating against engine/cabin noise. It's good to see that 0W-20 holds up well over 7,000 miles.
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N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
Nice thought, but no data to test the hypothesis.
Doesn't really apply to engines that call for a higher weight oil in other countries like the 2.5NA
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- Plano, Texas, USA
Yes, the engine is designed and manufactured based on their specified oil viscosity. But 5W-30 viscosity is also recommended by Mazda for 2.0L and 2.5L NA.
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- South Carolina
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- 21 CX-9 13 CX-5
Since you're still under warranty, I'd just stick with whatever the oil cap says (probably 0W-20 but yours may be different) and OEM filters.
Heck, I use OEM filters anyway.
Go for it. I've used up to 10w40. The engine seems to like 10w30 in the hot summer months.
Try 5w40.
CX5ylent
CX-5 KURO 2.5L NA MCG 2023
just to clarify, not using the recommended oil, will void warranty?
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- Denver, CO
What country? 0w20 and 5w30 are both oils that work in a CX-5. I run 5w30 myself. You can see this in the manual.
Not sure why that other guy is running 10w40, that's definitely not recommended.
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- South Carolina
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- 21 CX-9 13 CX-5
In a word, no. What will void it is not changing on time.
I change mine every 5,000 because it's easy to keep track of: just look at the odometer! Every 5K, time for an oil change.
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
Amsoil is good but not worth it for these cars. Spend a lot less money and avoid the cringy marketing; get Pennzoil Platinum or Ultra Platinum.
I run Amsoil oil in most of my things but do use the Mazda Moly 0W-20 since new in my CX-5. No noticeable oil consumption and that is always a win for me.
Amsoil always comes out on top in the Project Farm test
www.youtube.com
In the end non-regular or non-existent maintenance is what is going to do the car in.
Another great oil analysis channel with Lake Speed Jr with an engineering perspective
www.youtube.com
Amsoil always comes out on top in the Project Farm test
Amsoil or Pennzoil, which wins Championship? Let's find out!
Amsoil Signature Series 5W-30 100% synthetic motor oil competes against Pennzoil Ultra Platinum full synthetic 5W-30 motor oil in the oil championship finale...
www.youtube.com
In the end non-regular or non-existent maintenance is what is going to do the car in.
Another great oil analysis channel with Lake Speed Jr with an engineering perspective
The Motor Oil Geek
As a Certified Lubrication Specialist with over 20 years experience, The Motor Oil Geek channel delivers real data about motor oils from an expert perspective instead of speculation. Twice each month I will upload a new video that either analyzes a new oil, dyno tests an oil, reveals the details...
www.youtube.com
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- 2023 CX-5 2.5 Turbo AWD Auto
RIP 8/23:2013 CX-5 Sport FWD Auto 120k
Agreed. I’ve been a fan of Mobil 1 and stocking up each year during their rebate offers. I continue to use Mobil 1 0w-16 in my hybrid RAV4 and I’m now using Castrol Edge 5w-30 in the 23 CX-5 turbo. Castrol supposedly has a really good formulation for preventing deposits, something I’m interested in for the health of the turbo.
I used to use Amsoil for extended intervals a long time ago, but I just don’t drive enough to justify that anymore.
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- South Carolina
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- 21 CX-9 13 CX-5
I use Pennzoil Ultra Platinum. Great price, and outstanding oil.
N7turbo
2023 CX-5 2.5T ... 2024 MX-5 RF GT
I'm not sure what you're paying per quart for the Mazda oil but as far as I can tell it's an old spec. It's best to run API SP spec oil.
