No 10 W 30 oil at Walmart.

harrisonm said

I went to Walmart today to get some 10 W 30 synthetic oil for the Barracuda. They have every oil viscosity you can imagine, except for 10 W 30. There were a few empty spots on the shelf, I might try another Walmart. I might wind up going with 5 W30. I’m not an oil expert, do you think that would be OK?

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5W will be just fine. 5W or 10W means that upon cold startup, you 30 weight oil will have the viscosity, or flow, at the rate of a 5 or 10 weight, thereby getting oil through your motor faster, but still have the properties of a 30 weight oil at operating temps. Its a dual viscosity/rating system designed for colder temps.