A rock hitting the oil cooler would be no different that a rock hitting the radiator or the power steering cooler. In fact, Nissan should be glad to keep the warranty with any aftermarket oil cooler since it helps the longevity of the engine. I personally got a Stillen 25r cooler because I never want to have to worry about high oil temps in any condition ever again.
Plus, the additional oil capacity and keeping the oil temperatures down will aid in the longevity of the engine in my opinion while allowing longer oil change intervals.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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