Gen # Tacoma ATF cooler replacement.

Good day Guys,
I am new here. I have a question about replacing the rather small factory automatic transmission cooler with a much larger unit. Currently, I don't tow, but that will change early next year. However, weather now is favorable for working on truck, especially since it gets REAL COLD here in fall-winter (Lake Placid, NY area). The pictures that I've seen, so far on this site, show the old cooler alongside the new cooler. Wouldn't it be more efficient just to replace the actual cooler? And also, who would design a truck with NO dipstick? It makes me miss my 2007 Nissan Frontier even more--bought it used at 70k miles, put on another 240k miles, with no fluids mixing whatsoever. I would greatly appreciate your advice.
Thank you, JMJ

 

The truck, as it sits, is designed to haul 6.4K with the stock components. You need to buy an old vehicle if you want a transmission dipstick. All new ones are going that way because it allows a closed loop pressurized system that is more reliable and durable.

 

I think people are freaked out about not having a transmission dipstick, only because all the older automatics had them. You don't freak out about a differential not having a dipstick. Because if it doesn't leak, the fluid is still there. Same thing with a transmission. You have to check engine oil because its not a sealed system, and a small amount of oil is burned during combustion. Therefor it has a dipstick.