It's pretty obvious the Engineer doesn't drink a variety of beer. Look at the differences between Guiness, Sam Adams, Stella Artois, Negra Modelo, and the horse whiz that Budweiser passes off as beer. :mrgreen:
There are differences in batteries too. Optima batteries are fabulous, Varta not so, (Naj and I have discussed a varying opinion of them). I have also used Interstate, Eveready, and Diehard in cars and trucks. I'm still waiting for a 5 year old Interstate to show me a problem. The Interstate in my SL is three years old and has done a lot of cranking, (and I mean a lot[:0]) as I have continue to learn about Pagoda ignition, fuel injection, and other perplexing issues. Still not the first sign of a weakness. From now on, I'm going with Optima or Interstate.
But with moderate care, even a cheap battery (like cheap beer) can do the job. Over three years you could save $20 on your $30,000 baby.
Ray
'68 280SL 4-spd Coupe