Quote:
Originally Posted by Hammer0313
I've never used Marvel, how does it compare with the Lucas? Running Lucas every fill up, so far so good.
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I’ve used both. They both improve gas mileage a little but Marvel does a better job keeping your engine clean. I watched a video on YouTube where this guy tested multiple engine cleaners such as Chevron Techron, Lucas and Marvel and Marvel came out on top but Lucas also did well. My personal opinion is Lucas seem to improve gas mileage a bit more but Marvel will keep your engine a little cleaner. Both are good.