That's like saying hot oil is a better lubricant that cooler oil. Guess all those factory installed oil coolers are there for nothing as well as trans coolers. Plenty of people have had great luck running the big coolers, especially people like myself who actually use their truck as a truck. Got mine up to 190* pulling my 20' enclosed trailer in stop and go traffic. If I would've had the stock cooler the temp gauge would've been pegged and I've got a very mild 2600 converter.

Even Vince says the lower trans temps extends clutch life.

 

Nice Pan!!! Any difference?
Happen to have a PN on that???

I understand that there are normal operating temps, and I always believed adding a cooler would help maintain them when "rhomping" on a modified vehicle.

 

my trans runs at 115-130 while cruising at 60+, but then when i stop and let the truck idle for a few minutes (like after going to a drive-thru) it will go up to 200 if i sit long enough. i have dual electric fans (stock) and an aux trans cooler from the factory.

it did it with the stock trans, and after i installed my pb lvl1 and 2500 stall.

i have since installed an aftermarket cooler, and no change in temps.

 

I have seen 10-15 degrees lower with the pan and lubeguard.

 

those who own a truck with a 6l80 should know this. the trans does not like being cold. you will get better/faster/more solid shifts at 150 degree's than you will at 90.

 

I wish in AZ's summer I had 150 degree's!!!!!!

 

Very true but you should also know these trans get hot QUICK. I can only do a pass or 2 before I'm at 200 and that's with a aftermarket cooler. A big thing to making these trans last is good tuning and and keeping them in there operating range around 120-160. I have already had a few 6l80 trucks all tuned the same and with a decent trans cooler and havnt had one problem. Granted just because you keep it cool doesn't mean it can take on the world but if you just do a pass or 2 then shut it down and be smart about it it will work fine.

 

Think the Ford PN for that cooler is (PN 5C32-7A095-CB)

 

I just moved across the country a few weeks ago from Texas to California. This was right after getting a bunch of work done to my truck and getting it retuned. I monitored my trans temps the whole way as I was pulling about a 2,000lb trailer and had my bed full with at least 500lbs in it. During the day time when it was 70-80 degrees outside and cruising at 65 my temps were always stable around 140. At night when it dropped into the 30s they would get down to 120. In West Texas and New Mexico when I started hitting some long grades I got into the lower 160s but it dropped back to the 140s as soon as I crested them. Once I got into California though I saw some temps I had NEVER seen before, EVER, not even close.

HOrrible stop and go traffic going around LA on 210--got to 181
Going over the mountains from LA to Bakersfield on I-5--hit 191 going over Tejon Pass

I guess the factory cooler doesn't help that much on steep grades. I plan on driving from LA-Bakersfield alot and I'm worried now about trans longevity, especially if I get a stall soon which in all honesty I probably need. Also, another concern is with a looser converter and getting stuck in bad traffic. No cooler in the world can help your transmission when you're stopped or not going fast enough to get good airflow.

 

A trans cooler with a electric fan like the b&m or a tru cool with dual 10 inch spal fans can keep your trans cool in stop and go traffic.