CX5 2.5 S 0w20 vs 5W30 Engine Protection

[dylanm]

Will running 5W30 in non turbo CX5 2.5 S offer more engine protection and longer engine life? Plan to keep vehicle for over 100k miles. Turbo specs 5W30 so dealers should have it readily available.

Oil from manual
Mazda Original Oil Supra 0W-20
API SL/SM/SN or
ILSAC GF-III/GF-IV/GF-V
Mazda Original Oil Ultra 5W-30
Alternative Oil Quality
API SN*4 or ACEA A5/B5
0W-20
5W-30

 

[Hohn]

5w30 imo.

 

[spasm3]

I like it as our engines are short trip fuel diluters.

 

[Propflux01]

I am a 0/5w-30 fan over 0/5w-20. However, if you take it to a dealer, they will only put what is recommended by Mazda as a primary fluid.

I have the turbo, but if I didn't, since I do my own changes, I would still go with the 0/5w-30

 

[Plumb Bob]

Will running 5W30 in non turbo CX5 2.5 S offer more engine protection and longer engine life?

30-grade oil will (generally) offer better wear protection. Engine life is contingent on more than oil grade. All else being equal, yes.

 

[scoot]

You want to use a non Vietnam made filter to get the longest life from the engine .

 

[Patman]

You want to use a non Vietnam made filter to get the longest life from the engine .

That makes no sense whatsoever. A lot of the PG filters are made in Vietnam and they are very well made and most definitely won’t shorten an engine’s life one bit

 

[Propflux01]

You want to use a non Vietnam made filter to get the longest life from the engine .

The filters used by Mazda come in three flavors: Japan, Thailand, and USA. The USA filters are deemed the "value" filters by Mazda. There are no filters used by Mazda that are made in Vietnam.

 

[scoot]

That makes no sense whatsoever. A lot of the PG filters are made in Vietnam and they are very well made and most definitely won’t shorten an engine’s life one bit

It was in jest for the fan boys that can't stop slobbering over those PG filters

 

[cammyfive79]

Just FYI and somewhat related, this is what Mazda specs for the CX-50 Hybrid which is the RAV Hybrid powertrain. Dealers will only use this upon request or in warranty work. Customer pay oil changes get bulk 0W-20 for non-turbos and 5W-30 for 2.5Ts.

 

[kschachn]

It was in jest for the fan boys that can't stop slobbering over those PG filters

You’ve really moved in here.

 

[scoot]

Wonder why Honda hasn't taken the deep dive into the 0w-16 / 0w8 realm yet

 

[TurboZedd-R]

Wonder why Honda hasn't taken the deep dive into the 0w-16 / 0w8 realm yet

They are probably happy with fleet mpg/protection on a xxw20

 

[Leo99]

With normal driving, IMO, you might see a difference around 300k+ miles. Maybe.

 

[dylanm]

Just FYI and somewhat related, this is what Mazda specs for the CX-50 Hybrid which is the RAV Hybrid powertrain. Dealers will only use this upon request or in warranty work. Customer pay oil changes get bulk 0W-20 for non-turbos and 5W-30 for 2.5Ts.

View attachment 274417

Very interesting to see Mazda's running Toyota hybrid tech. Do US market
2.5 L A25A-FXS I4 have 14:1 compression ratios? That would be higher than US Skyactiv 13:1.

 

[cammyfive79]

Very interesting to see Mazda's running Toyota hybrid tech. Do US market
2.5 L A25A-FXS I4 have 14:1 compression ratios? That would be higher than US Skyactiv 13:1.

It’s the exact powertrain - Toyota stamping and part numbers and all.