ive go some leftover optima yellow tops that i bought at the charlotte autofair 2 years ago. they are cosmetic blems and returns. the guy that sells them is an independent dealer of the blems. he sells prolly 400 of them every year. over the past four years ive bought about a dozen batterys off of him and have no issues. i have a bunch left over from a audio project that im changing gears on. they are unused and theres absolutely nothing wrong with these from a performance standpoint and youre welcome to load test them if youd like!
Not to shit on a sale, but from everything I’ve read and heard, you want to stick with a VW battery for your TDI. People don’t have a lot of success with others.