That's all I'll run in my aircooled cars. They're not exactly light, but you can mount them sideways and they'll never leak. Those 2 features alone are worth the price of admission. Rust sucks and so does battery acid.
Owner reviews for battery
spend the $100 on an optima its well worth it
Optima Yellow Top. You can play the stero (amp/sub) all day and the car still starts. I've done it
Optima Orange Top.
I would say if you have problems with lights dimming and stuff when you are using ur electrical accessories, then get an Optima battery, also if you have a sound system in your car I'd recommend an Optima
optima red top fits fine in my 87gti, cut some plastic stuff to fit underneath so it would hold a little tighter, there were a few mm of space between the lip on the battery and the metal lip that is supposed to secure it.
NC-GTI, I haven't been in a VW since my '82 Rabbit back in the mid 80's but a good friend who's owned a Corrado, Rabbit, Fox, Jetta and now a GTI has had too many battery failures and his recommendation of the Optima battery is just some good info I'm passing along.
duralast has giving me nothing but probs.
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