A few months ago I replaced the autozone battery with an optima red top. I've left the lights on twice for over half the day and the car still started right up. I'm really impressed with how strong the red top cranks.
I use Red top Optima batteries in all my cars, I truly hate flooded lead acid batteries as they will leak at sometime in their life.
I run a Optima yellow top as well, but mine fits in just like stock.
I have an optima yellow top in mine.
I had an Optima I took out of my Crew Cab Dually, probably two years old (used for my car stereo). It sat in my garage for a year. Then I needed a battery for my 1/2 ton truck. I charged the Optima and installed it. I ran it for three years without problems. Sold the truck with the battery still in it.
Absolutely YES you should buy the optima RED top 6 volt batteries instead of the dealer yellow top batteries. There is virtually NO difference between the RED top optima battery and the dealer yellow top optima battery that the dealer sells. Both are made by optima.
The only advantage to Optima batteries is if they are used in an environment where they experience very high vibration or need to be mounted in unusual positions. The longevity of them is no better than a good quality lead acid battery, so unless you're hardcore offroading or need to mount the battery upside down for whatever reason, they really offer no benefit.
My optima failed after 1.5 years
Johnson Controls ruined Optima.
Optima batteries have taken a hit in quality in recent years.
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