oil coolers

[cudabob496]

Holy crap...  that's an engineer's dash all right! 

I don't even understand half of what you're measuring...

What's next?   

Thanks for posting the pic.

Well, just go down the list in Summit of all the available gauges.  lets see,
haven't done cylinder temperatures yet! haha

the gauge on the very left, fuel pressure, is very valuable, IMO.

[Aussie Challenger]

keeping oil at reasonable temperatures is good for the longevity of your motor, too hot and the oil breaks down losing its lubricating properties. Too cool for too long will place undue strain on pump, filter.
Oil takes away heat just the same as water but can only deposit that heat into the sump/oil pan so an effective oil cooler can be an advantage if vehicle is constantly under load or high speed conditions. Adding extra oil by enlarging the sump/oil pan is one way to help keep oil temps down. In modern cars manufacturers cram engines into tight spaces with poor air flow and usually low capacity sumps so an external cooler is really needed especially now that manufacturers have extended service intervals and a need to keep oil properties consistent.
In my vehicles I will be only enlarging the sumps/oil pans giving more surface area for the surrounding air to help cool the oil and with more oil it will help this process as well. My vehicles won't be doing any racing even though the LRE truck may do a bit of towing now and then.   

[Mopar Mitch]

OIL coolers should only be added if determined to be needed... so.. a temperature guage is first needed to monitor the fluid temps... then decide upon the size of the cooler... and continue to monitor the temps if larger or smaller coolers are needed.

Consider WHEN the cooolers would be needed... track days, street/hwy, spring/summer/fall temperatures outside.