I have always had great luck with Berrymans B12 in the tank... I have used this on all my cars for 20 years and I have never had any fuel delivery problems... Carbs or injection. I usually do it (one can in the gas) when I change the oil, or when I know Im goin on a long trip. As a rule... I found that anything that says Berrymans, DELIVERS. Sonny