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post #1 of (permalink) Old 12-29-2000, 02:43 AM
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Trans. lube?

I've rebuilt some ZF transmissions from Super Duty Fords and the manufacturer calls for synthetic Mercon as lube. I'm tempted to try it in my sams trans. and t/c. It sure can't have the load pressures of a HUGE Ford service truck with all the weight of a rigged out tool bed. Think of the weight that a hotshot truck with a float load of drill pipe is pulling!! I would do this to get rid of the sluggish feeling of a cold transmission and transfer case on a winter morning. Also,it might help mileage too. Any thoughts?

88 Sam 4.16t/c lockrite rear 225-75's on stock wheels and suspension.
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post #2 of (permalink) Old 12-29-2000, 03:25 AM
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Re: Trans. lube?

Sounds like good stuff, try it, then we'll know .How much does it cost ?
I recommend Redline MTL or MT90 for the tranny - it's $8.50 a qt tho. Any brand syn will do for t/c , diffs .

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post #3 of (permalink) Old 12-29-2000, 04:01 AM
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Re: Trans. lube?

Try the synthetics. I'm using Amsoil (75-90) synthetic gear lube in tranny, t-case, and diffs. No slugishness at all. Personally, I would only use the recommended gear lube. Hope this helps.
I change mine every 80,000 miles and it looks like the day I put it in.

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post #4 of (permalink) Old 12-29-2000, 04:01 AM
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Re: Trans. lube?

I run a pure syn. in the trans.,diffs,& t-case.80-90w dyson gear oil.

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post #5 of (permalink) Old 12-29-2000, 08:38 AM
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Re: Trans. lube?

i think that if you stay with any of the synthetics you will be in good shape. we have been using the mobile 1 75-90w and it has worked great. so there is my 2 cents later mike

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post #6 of (permalink) Old 12-29-2000, 09:10 AM
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Re: Trans. lube?

Jeeps used ATF in their tranny's from the factory in the 80's to help with the fuel mileage. Chevy did the same thing with their HUGE SM465 granny tranny for cold weather climates. You could give it a try, but do you have a spare tranny kicking around in case it doesn't work?

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post #7 of (permalink) Old 12-29-2000, 12:10 PM
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Re: Trans. lube?

I would not use ATF in the tranny as it was not designed for it. I don't think it would also have the lubricity that a high quality synthetic has. In my opinion,I don't think risking a tranny is worth the possible minimal benefits you might receive by using ATF. I'm not an expert, but this is just my opinion.

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post #8 of (permalink) Old 12-29-2000, 07:48 PM
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Re: Trans. lube?

i personaly run the called for lube with abottle of moly lube power punch added. the power punch can even dely for a time comleat bearing falier if you have some going south.

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