On 7/27/05, Valentin Garcia <valentingar@msn.com> wrote:
>
> Hey gang, I have a question on oil. What does it all mean? Example:
> 5w30 vs 10w30. I usually put in what's recommended, but why is a certain
> weight required? I have an 04 4.7L quadcab Ram that takes 5w30, what would
> happpen if I put in 10w30. Thank you in advance.
> I know this has probably been covered before so I apologise for the revisit.
The first number is the "cold" viscosity, the second the "hot"
viscosity (I hope I got those right).
If you ran 10w30, the oil would be thicker until the engine is warmed
up. You won't get any gain running it over the 5w30. I put 0w30 in
for the winter months but it doesn't get cold enough in Houston for
you do need that.
I'd recommend sticking with the 5w30, unless there's a shortage and
you can't find anything but 10w.
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