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Phil Veldheer Racing · 02-16-2021, 03:30 PM

I've used both and the yellow top with the OPTIMA charger seems to spin my engines at a higher rpm. I do have an alternator also. I will convert all my cars to yellow top from red.

02-16-2021, 03:30 PM	#7
Phil Veldheer Racing Member Join Date: Feb 2006 Location: Holland, MICHIGAN Posts: 155 Likes: 43 Liked 26 Times in 8 Posts	Re: Optima Battery I've used both and the yellow top with the OPTIMA charger seems to spin my engines at a higher rpm. I do have an alternator also. I will convert all my cars to yellow top from red.