Red top is the starting battery; yellow is for deep cycle (for loud stereo types) - go to their website to confirm but I think you need the red top. They used to make an orange top (reversed terminals) but now it's just a model 24(?)R - a red top with reversed terminals. I have red tops in my W210 and 98 Passat neither of which should fit according to Optima.

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RIP "Betsy" (Oo=*=oO)
'96 E 3 2 0 (W 2 1 0) M 1 0 4 (Totalled)
Spaces in sig so as not to screw up the SEARCH; every time someone searches for that MB they don't want my sig!

2004 Audi A8L
'98 VW Passat 1.8T 5M
'87 Alfa Romeo Milano 2.5L 5M
'67 Impala convertible, 327cid