I agree it depends on what road course you are trying to run? There are some people I know that have got away with no oil cooler kit on their Z. Installing a aftermarket oil cooler kit is always a good idea if your Z see’s track time a specially auto x it will give you extra peace of mind anyway. Definitely make sure you have done all your general maintenance and inspect your Z before you go run auto x events. I was not able to get away with the stock Nissan oil cooler as my oil temperatures were running 240+ after beating on my Z with multiple runs in the summer humid heat.
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