NASCAR9
Tremor Newbie
- Joined
- Feb 12, 2021
- Messages
- 2
- Reaction Points
- 5
- Location
- So California
- Current Ride
- 2020 F350 Tremor 7.3
Actually the trans has a cooler on the outside of it that is water cooled. Get under the truck and look.
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I wasn't alive in the 1970s. I can send you pictures of all late model trucks with cooling system and Trans cooler upgrades. I didn't invent that. I'm well aware of what these trucks are made for and what they can do. I don't want to pull hills at 75 myself but I didn't ask the question. If the poster is really pulling the weight he says he is he shouldn't have any problem with a 7.3L. Technically an F-150 is rated higher than 10k these days. Thanks for trolling though. I'll continue to direct my comments to the person asking the question.This is not the 1970s. These trucks are extremely well engineered. If the trans is getting too hot it's because it's being abused beyond it's engineered capabilities. Either slow down, or buy the 6.7 to pull the load that you're trying to pull at the speeds you're trying to pull said load. Adding a antiquated trans cooler to a truck like this ain't gonna fix it.
The 7.3 will NOT perform like a 6.7....period.....in all respects.
LOL! Hardly trolling......some day you'll figure it out....maybeI wasn't alive in the 1970s. I can send you pictures of all late model trucks with cooling system and Trans cooler upgrades. I didn't invent that. I'm well aware of what these trucks are made for and what they can do. I don't want to pull hills at 75 myself but I didn't ask the question. If the poster is really pulling the weight he says he is he shouldn't have any problem with a 7.3L. Technically an F-150 is rated higher than 10k these days. Thanks for trolling though. I'll continue to direct my comments to the person asking the question.
This. Especially with a gasser.Maybe don't climb hills at 75mph?
Was able to do 75 mph up the same hill with the same trailer with my 2017 F150 3.5L twin turbo Ecoboost with the new 10-speed that came out that year (same time of year at almost the exact same outside temperature). Yet I had no elevated transmission temperatures with that truck. Have no need to go back to the diesel world … been there done that … have previously owned a Powerstroke, a Cummins and a Duramax. The torque for pulling was great … but injector issues, DPF issues, DEF pump issues, rough shifting transmissions, limp mode, random & expensive warranty fixes, etc. … not a reliability confidence builder. Pulling 10,000 lbs. a dozen times a year didn’t pencil out to justify a diesel as a daily driver to work … which is why I chose the 7.3 w/ the 10-speed transmission. Guess I gotta be easier on my F250 Super Duty than my F150 Ecoboost when towing my travel trailer .This is not the 1970s. These trucks are extremely well engineered. If the trans is getting too hot it's because it's being abused beyond it's engineered capabilities. Either slow down, or buy the 6.7 to pull the load that you're trying to pull at the speeds you're trying to pull said load. Adding a antiquated trans cooler to a truck like this ain't gonna fix it.
The 7.3 will NOT perform like a 6.7....period.....in any respect.
10R140 is not the 10R80. Can't compare like this in a meaningful manner.Was able to do 75 mph up the same hill with the same trailer with my 2017 F150 3.5L twin turbo Ecoboost with the new 10-speed that came out that year (same time of year at almost the exact same outside temperature). Yet I had no elevated transmission temperatures with that truck. Have no need to go back to the diesel world … been there done that … have previously owned a Powerstroke, a Cummins and a Duramax. The torque for pulling was great … but injector issues, DPF issues, DEF pump issues, rough shifting transmissions, limp mode, random & expensive warranty fixes, etc. … not a reliability confidence builder. Pulling 10,000 lbs. a dozen times a year didn’t pencil out to justify a diesel as a daily driver to work … which is why I chose the 7.3 w/ the 10-speed transmission. Guess I gotta be easier on my F250 Super Duty than my F150 Ecoboost when towing my travel trailer .
Tremor never shift cycled … simply downshifted as it should to 5th gear and held itself there until I crested the top of the hill.10R140 is not the 10R80. Can't compare like this in a meaningful manner.
And maybe don't let the Tremor shift cycle next time.
Ecoboost should hold lower gears longer to maintain boost.
At 240, the gauge is nowhere near the yellow/red. I’m guessing yellow is around 250 or so. The trans seems to get up to that 240 quick but doesn’t build much faster after that. My experience is the acceleration going uphill is what builds the heat.Attached is the Mercon LV transmission spec sheet - In all I have reviewed - 270 is the point at which your ATF will break down and you will at some point have a catastrophic failure. Once you hit 240 degrees you should be slowing down - if you hit 250 you need to take immediate action to allow it to cool down (slow down, but don't stop - you need to keep air flow to allow it to cool - if you stop, it will heat up more, before cooling).
Towing a 395M which is 15,400 lbs. unloaded with a 7.3 is a load for sure - and as you noted 18k-20k loaded - so you are working your truck hard on a 6% grade. In addition you are very close to the max tow rating for your truck (maybe over if you have an F-250). To maintain pace you are going to have to run high RPM in a lower gear - that will generate heat and at some point will require you to slow down.
Best plan is to mind you gauges, if you go over 240 take it easy until you cool a bit - always better to slow down and get there, then break down and waste the day (or two) sorting out the issues. In addition changing your ATF more often than the owners manual calls for is cheap insurance as well - gauge your changes off your towing miles, versus total miles - every 10k total and/or every 5,000 miles of towing whichever comes first - that of course if is you are towing a heavier trailer and seeing elevated temps - if not than that can be overkill - but far cheaper than the alternative.
Last if you have not already done so, have someone use Forscan and put the actual temperatures above your guages so you can see not only on the guage, but an actual number. Remember those are dummy guages - so a computer estimate of the tranny temp - so error on the side of caution!