Search, my man, search. Lots of threads on this.
In short summary, you don't need an oil cooler if you're just doing routine street driving in most climates. If you are an aggressive street driver in hot weather, the 19 row should do you well. Those who have tracked the 19 row in hot weather still pulled temps of 260ish and opted for the 25 row. I'm not sure if anyone has really gone with a 34 row.
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2013 Cadillac V-Wagon, RIP Z
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