Arrvaxx

I am of the mind that cooler is, with the exception of start up, always better. The lubricants we use in each of the parts you mentioned break down when heated.

Think about boiling water. Ever notice that there is a progression to full boil? That is because some molecules will react to heat at a lower temperature (the boiling point we all toss around is actually an average temperature for the liquid not an absolute). The same is true with lubricants. Every time you heat your lubricant some of it breaks down. That is why an engine oil that is never stressed still breaks down. Over time contaminates change the temperature that such things occur.

My point is that there is no reason not to use coolers even in daily driving. It is just that your return on investment is different and thus for most not worth the time, expense, and effort.

With that in mind if you don't track your car or regularly drive it hard and change your fluids as recommended the only thing you really need to invest in is an oil cooler. Sounds like you are doing that so right on.

*Edit: Sorry reread your original post. If you are going to track the car then yes, invest in a larger oil pan and Nismo diff cover. You should also put in a power steering cooler. Most people seem to forget about that fluid and don't change it...then it boils. Brake cooling could save your life on a track but more importantly remember to change the fluid before every event so that you are operating in the 'dry' boil point.

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