Chevron 1496 Healdsburg Ave, Healdsburg, CA95448 The Chevron service station on Healdsburg Avenue is on the north side of town, about a mile from the Plaza and a couple…More blocks beyond the Dry Creek intersection. It sells all grades of gas, including diesel, at eight self-serve pumps. There's also an affordable drive-through car wash, with washes priced from $6 to $8; anyone who buys gas here gets a dollar off. A mini-mart inside includes all the usual beverages and snacks, a better-than-average self-serve coffee station as well as tobacco products, beer, wine and hard liquor (behind the counter). The pumps are open 24 hours a day, with the convenience store open from 5am to 11pm.