Have 15 Sling with common crusty battery. Intended to replace with Optima yellow top as many Sling owners have had success with. Went looking through reviews on Amazon before purchasing and there seemed to be a common theme about poor quality since Optima was purchased by Johnson Controls and moved factory to Mexico. Here's a sample of reviews:
Amazon.com: Customer reviews: Optima Batteries 8014-045 D34/78 YellowTop Dual Purpose Battery
Stopped by Rural King today and they have an AGM group 34 battery with better specs for nearly half the price in pretty much the same size. They had the Optimas there also and I placed them side by side--almost identical.
Rural King Automotive AGM Group 34 Battery RK-AGM34 : Rural King
Bought and installed the RK AGM34. It slid right in to the existing 2015 battery tray with no issues. Seems to be a reasonable alternative for anyone considering a battery upgrade.
New Battery-Different
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Rural King and Harbor Freight are 2 of my favorite stores. You can find damn near anything in Rural King!!!
CDCAMEL6
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I might see if Costco carries... Brand new battery free of charge every 2 years... Assuming you maintain membership...
I've already had 2 batteries for my Lincoln and just bought the 1 in 4 years...
Interstate is what they use...
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Rural King and Harbor Freight are 2 of my favorite stores. You can find damn near anything in Rural King!!!
CDCAMEL6
Rural King is where I taught my son how to pick up chicks.
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