Bought my Red Top @ Costco for $105.95. Fits like a glove
Ah, but the Red Top fits in the TDI without problems. About $109 at Costco.
I run a Deka tractor battery, all you need to do is get the convertion kit for the terminals and I mounted it to NHRA spec. I have been using this for about 1.5 years straight now daily driving with no issues at all. Even as cold as it was this winter the thing cranked right over every time. The main reason I did it was for the weight reduction....
I have the stock VW battery under the hood and an optima yellow top in the trunk with a 5 farad cap as well, now Im doing DB drags, and I also use my car as a daily driver, I have yet to see a single bit of strain on my electrical system and belive me I have two Autometer volt guages just to be safe for monitoring.
Ran a dual battery setup in my S4... was easy. Ran a PAC relay from the main battery to the rear setup with a battery isolater. Battery charged when the stereo was on, and stereo was only powered by the Optima yellow top in the trunk.
I've had an Optima ever since and never a problem...
I have a blue top (couldn't find yellow locally) and I love it. Damn battery box doesn't though (had to chop it up and piece it back together to make the battery fit).
The VW battery tray in the 91 GTI is trying to eat my Optima The little bracket that stays in the car that normally holds the bottom lip of the battery is cutting through the case of the Optima because of the 6-pack design of the case. I had to use a small section of wood to put between them to keep it from cutting it any worse. The tie down bracket that can be removed from the car doesn't fit the Optima very well either, again because of the the 6 pack case shape. I had to use a grinder wheel to grind a section out of the bracket so it would fit around the cylinder shape of the case.
I have had nothing but problems with optimas and I am far from the only one. Go with either an Odyssey or a walmart brand yellow top. I had one sitting around for 6 months hooked up to a non running vehicle. Tossed it into my gf's bronco to fire it up one day and it started right up. Also, I run those in my diesel, and I left the interior light and cargo light for over 12 hrs. Got in and she fired right up.
FYI New optimas are the suck. Good luck though.
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