- #10 of 46
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Re: What type Dakota do I have [philbergin]
by sunburn
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Jul 21, 2006 (4:13 pm)
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Replying to: philbergin (Jul 21, 2006 7:09 am)
With a 4.7L, even with the 3.55 gears, you should be able to tow a 3200 lb trailer. Is it a pop-up or a travel trailer?
A few of things to keep in mind: 1) Make sure you have a transmission cooler, if you have the automatic transmission; 2) Make sure you run 75W-140 synthetic gear lube in the rear differential; 3) make sure you have electric brakes on the trailer.
Your towing capacities are listed in the owner's manual. They will depend on body style, 4x2 or 4x4, engine, and gear ratio.
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- #11 of 46
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Re: What type Dakota do I have [sunburn]
by philbergin
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Jul 21, 2006 (4:45 pm)
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Replying to: sunburn (Jul 21, 2006 4:13 pm)
Thanks for your reply. It is a regular trailer and weighs 3200 lbs, but I have to add in the sway hitch and other stuff, so it is probably closer to 4000. My book says I'm ok up to 5,000, so I guess I should be ok.
By the way, do I need to put the 75W-140 synthetic gear in the rear differential if I am running with a manual transmission, or is that just for automatics?
Thanks again.
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- #12 of 46
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Re: What type Dakota do I have [steak2k1]
by philbergin
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Jul 21, 2006 (4:48 pm)
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Replying to: steak2k1 (Jul 21, 2006 7:34 am)
Thanks, that clarified it for me. 3200 is the dry weight, so I do need to add the extra for sway hitch and propane, water etc. But the book says I can haul 5000, so I should be ok. Thanks again. Phil
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- #13 of 46
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Re: What type Dakota do I have [dewaltdakota]
by philbergin
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Jul 21, 2006 (5:02 pm)
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Replying to: dewaltdakota (Jul 21, 2006 8:49 am)
Wow, pics! Man, if I didn't understand it from the other posts, I sure get it now. Makes sense and now I know I have a Club Cab. Thanks a lot! Phil
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- #14 of 46
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Re: What type Dakota do I have [philbergin]
by sunburn
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Jul 22, 2006 (5:25 am)
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Replying to: philbergin (Jul 21, 2006 4:45 pm)
The synthetic 75W-140 gear lube is required in the rear differential for towing, regardless of transmission type. That's buried in the owner's manual somewhere.
If you have a limited slip differential, you will also need to add the limited slip additive, if the gear lube doesn't already have it.
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- #15 of 46
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Re: What type Dakota do I have [sunburn]
by philbergin
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Jul 22, 2006 (10:49 am)
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Replying to: sunburn (Jul 22, 2006 5:25 am)
Thanks. I did take it to the dealer today and he recommended synthetic 75W-90, so I went ahead with what he recommended. He said 140 might be a bit too heavy. I guess it should work ok. He did do the slip additive as well.
Thanks again for your help.
Phil
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- #16 of 46
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Re: 75X -140 Rear Diff fluid
by steak2k1
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Jul 23, 2006 (2:55 pm)
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Replying to: sunburn (Jul 22, 2006 5:25 am)
I am wondering if there is something in between the 90w and 140W for the rear diff and in synthetic. I just put Redline 10W40 synthetic in for an oil change and it seemed quite a bit lighter in texture/viscosity than std oil at 5W 30.
It might be worth it to go with the heavier lube in the rear diff even though I just changed it a while ago as well..and like Phil, they put in 75W-90 synthetic with LS additive. I did pull 4300 or so lbs thru the rockies without a problem..but i would hate to lose a rear diff up in the mountains...Especially seeing as we are going again in a week for vacation.
rgds,
Theo
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- #17 of 46
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Re: 75X -140 Rear Diff fluid [steak2k1]
by sunburn
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Jul 23, 2006 (4:06 pm)
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Replying to: steak2k1 (Jul 23, 2006 2:55 pm)
Right now I'm running the Redline 80W-140 in my rear diff. The 80W-140 comes with the limited slip additive, while the 75W-140 does not. I was surprised that when I switched to Redline gear lubes (75W-90 front and 80W-140 rear) that I gained about 2 MPG on the highway (non-towing).
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- #18 of 46
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Re: 75X -140 Rear Diff fluid [sunburn]
by philbergin
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Jul 23, 2006 (8:37 pm)
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Replying to: sunburn (Jul 23, 2006 4:06 pm)
Well since I just changed it I will probably keep it (the synthetic 75W-90) until I get ready to do some serious mountain climbing. Gaining 2 MPG on the highway is certainly worth spending a few bucks to put the heavier stuff in.
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- #19 of 46
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Re: 75X -140 Rear Diff fluid [steak2k1]
by philbergin
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Jul 23, 2006 (8:40 pm)
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Replying to: steak2k1 (Jul 23, 2006 2:55 pm)
4300 pounds thru the rockies! That's pretty good. What year/model etc. are you using?
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