Worked just great for me on a 5K+ cross country trip last summer. Across mountains, down to Florida, etc.
Averaged in excess of 28 mpg at 65-70 mph average speeds. Sometimes a lot higher.
Chevron Supreme is a very good oil and really cheap, too! Like $.69 per quart when on sale with a rebate.
If I lived where it was hot all the time I would probably gravitate to a HDD 15W-40 (Delo, Pennzoil LongLife, etc.) as the miles added up, say after 150K or so...
These well-built engines should be good for 250, 300K+ with just minimum care.
Cheers!
