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Location: Alamosa, Colorado (200 yards from the Rio Grande)
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Use the octane recommmended in the owners manual. I've always liked Chevron since their additive Techron kept my SRT-4 spark plugs in mint condition....
Location: Alamosa, Colorado (200 yards from the Rio Grande)
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I know guys that use aviation gas in their SRT-4s.....very expensive. Also, if you live in the Rocky Mountain states, pay attention to the octane ratings, not "regular", "mid-grade", or "premium".....high altitude changes everything.