Use 5/30 or 5/20?

[bemused]

I have a 2003 Accord and normally use Havoline 5/20 with 5K OCI with new Purolator filter. I've just seen 5 Qt jugs of the Havoline 5w30 at my local Walmart for 10 bucks a pop. Any downside to using 5w30 instead of 5/20?

 

[DmanWho]

No downside whatsoever to using the 5w30.

 

[demarpaint]

Possibly a slight drop in MPG, although I doubt it.

Frank D

 

[sunfire]

You could lose some mileage using 5w30. So you wouldn't be saving any money in the long run.

 

[Drivebelt]

I like the little bit of extra viscosity protection a 5w30 provides over a 5W-20.

Not really a fan of the 5W-20's, and if I bought a car that spec'd 5W-20, I would be using 5w30.

I see no problem using a 5w30 in place of 5W-20.

 

[jmsbntz]

I saw somewhere that Ford's own research shows the avg owner is not likely to benefit much from the .6% increase in fuel economy that a 5W-20 provides over a 5w30 vs. their CAFE benefit.

 

[mitchcoyote]

5w30