Wow! That's a excellent price especially for Hawaii.
In my opinion the High Mileage oils are a better value simply because of the way they're made. As a general rule the High Mileage oils are different in the following ways:
- blended to be thicker within their specific viscosity grade.
- contains small amounts of high quality esters to help swell engine seals and reduce or prevent leaks.
- contain a slightly more robust additive package to help with cleanliness of internal parts.
Older engines tend to produce more blow-by which creates a need for more cleaning and better particle suspension.
At $1.49 per quart you can't go wrong. Havoline has a excellent reputation for making a good quality product and there's no reason that their new High Mileage formula would be any different. I'd go for it.