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Appreciate it, BB. That's the truth... I'm the worlds worst Christian, but I sure will be praying every mile of these trips. I'm thinking about buying a new driveshaft and center support bearing in the next month or so. I've lubed the slip yoke in the middle 2-3 times and I'm starting to get a familiar 'clunk' when leaving from a stop or approaching a stop sometimes. I got under her and shook it all down, but I don't see anything loose. I already put a new center support bearing in there a year or two ago, but it wasn't a Ford part and I question it... I sure wish I could do a one piece Aluminum driveshaft, but probably not.
There is a post on this forum from @Mark Kovalsky that said something like "the design operating temperature of the transmission is 180⁰F". That's why a lot of us run one of these..
Running a little cooler doesn't hurt anything. It's just not as efficient as it could be.
Makes sense, Noob. I think I would not be inclined to add one, despite a possible gain in efficiency. I had a similar thought with regard to the Banks diff cover (cooling fluid to below std operating temps).
Makes me wonder about the place that allegedly deletes the bypass.
This “mod” makes me mad on so many levels. I have posted a snapshot of Mark’s statement on the bypass purpose and reasons to keep it so many times on the FB page. And usually no one wants to believe it. Typically I just give up and let them live in ignorant bliss.
The pour point of Mobil 1 synthetic is -60'F. It would seem that there would have to be a lot of other factors going on for ATF to plug the cooler at 0'F. Not doubting Mr. Kovalsky, and not saying the pour point at -60'F doesn't equal a relative viscosity equivalent to an obstruction, just seems 0'F is pretty warm for ATF to effectively present an obstruction.
This “mod” makes me mad on so many levels. I have posted a snapshot of Mark’s statement on the bypass purpose and reasons to keep it so many times on the FB page. And usually no one wants to believe it. Typically I just give up and let them live in ignorant bliss.
When you’re the popular new kid on the block - nobody questions you. There have been a few ‘popular’ 4R100 transmission builders over the years. Most don’t last long and I suspect the current one is on that course.
The pour point of Mobil 1 synthetic is -60'F. It would seem that there would have to be a lot of other factors going on for ATF to plug the cooler at 0'F. Not doubting Mr. Kovalsky, and not saying the pour point at -60'F doesn't equal a relative viscosity equivalent to an obstruction, just seems 0'F is pretty warm for ATF to effectively present an obstruction.
Mobil 1 will not plug the cooler at 0°F. Conventional MERCON will.
A fluid's properties and performance in cold temps can change once the fluid is imbued with fine particles of clutch lining materials and other contaminants. Heat cycling and fluid shearing can also change its properties. When we are provided a pour point for any given fluid, it is new fluid in the bottle as formulated.
For comparison with the pour point of Mobil 1 previously provided above:
Mercon V Pour Point -54°F (Motorcraft brand, likely produced by ConocoPhillips)
Mercon Pour Point -38°F (Chevron brand, legacy material specification dated 2001)
I'd be lying if I said I was comfortable with a 4-5K mile trip and a 225k mile truck, but I've saved for, swapped out and bled installing most of the stuff I figure could be the major breakdown points. I've got good kids and a good wife, but their confidence in my mechanical abilities coupled with their ignorance of how many millions of things could go wrong give me heartburn just typing this. When I express any hesitation to her, she says, "It'll be fine. You just spent $6K on a transmission. What else could go wrong?". I smile and mumble under my breath, "...a lot...".
One of the best posts, ever!
BTW, still loving my BTS after 10 years and 50K towing through the Rockies!
2300 miles into a family trip. Towing 11k lbs, hitting grades up to 8% and she is kicking butt. I don't worry about the trans. She just goes... I worry about everything else...but not the trans. The drag I feel coming down a grade helps significantly. I recently did hwy 191 from Vernal UT to Lava Hot Springs in UT. Holy crap...very glad to have that drag when I drop her to 2nd. Even with the trailer brakes, those brakes were HOT. Its a beautiful but nasty down grade. Very, very thankful for this trans so far.
Even did some trail exploring in UT and WY w/o the trailer. Got pretty far out, no cell reception, miles off the road. Not smart, but my kids and wife were loving it. Trans never went over 185 so far, towing or not.
2300 miles into a family trip. Towing 11k lbs, hitting grades up to 8% and she is kicking butt. I don't worry about the trans. She just goes... I worry about everything else...but not the trans. The drag I feel coming down a grade helps significantly. I recently did hwy 191 from Vernal UT to Lava Hot Springs in UT. Holy crap...very glad to have that drag when I drop her to 2nd. Even with the trailer brakes, those brakes were HOT. Its a beautiful but nasty down grade. Very, very thankful for this trans so far.
Even did some trail exploring in UT and WY w/o the trailer. Got pretty far out, no cell reception, miles off the road. Not smart, but my kids and wife were loving it. Trans never went over 185 so far, towing or not.
Great to hear Quentin. You have the truck pretty well lined out. Keep us posted!
