5w20 or 5w30?

[diywannabe]

The 2010 CX-7 2.5L we just bought says 5w20 oil on the oil filler cap. It has 145,000 miles on it. Should I still use 5w30? Thanks

 

[SparkYellow]

I believe you can. The owner's manual is a bit confusing though. If you flip to page 401 of the PDF, it tells you what to use depending on where you are. 5w20 was recommended for fuel economy.

https://www.mazdausa.com/siteassets/pdf/owners-optimized/2010/cx7/2010-cx-7-owners-manual.pdf

I have a CX-3 and switched to 5w30 from 0w20.

 

[diywannabe]

I'm in Florida. It rarely gets below freezing and I've also read that in other countries Mazda recommends 5w30.

 

[Lazy2.5]

It literally makes no difference.

You can use 5w20, 5w30, whatever. Though you might even want to consider 5w40 if you're in florida, though probably not less than 5w30.

 

[N7turbo]

Highly doubt 5w40 is justified. Florida does not get hotter than Nebraska.