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post #1 of 5 (permalink) Old 06-09-2010, 12:12 AM Thread Starter
hawker250's Avatar
Join Date: May 2010
Location: squamish, B.C
Posts: 14

i have a 1990 f250 with a 5 speed. if i am towing should i keep it in 4th or is OD o.k. I know with a auto tranny never put it in OD when towing. just wondering?
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post #2 of 5 (permalink) Old 06-11-2010, 02:49 PM
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Location: bonnyville alberta
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it shouldn't hurt anything as it's all gear to gear but will have less pulling power as it's a .75:1 ratio gear.

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post #3 of 5 (permalink) Old 06-11-2010, 03:55 PM
Fordsforever6.0's Avatar
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Location: Kitimat, BC
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I have an auto and I use OD when towing. I just gear down (turn OD off) when passing or at the bottom of a hill. I would do the same with a manual tranny otherwise you burn a bunch of extra fuel for nothing. Using synthetic fluid in the trans helps too.

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post #4 of 5 (permalink) Old 07-14-2010, 08:35 AM
Maritime Storm's Avatar
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Location: Riverview, NB, Canada
Posts: 122
4th gear, Ford in that generation recommended against towing in 5th. It had something to do with lubrication in the transmission and potential for overheating the engine.
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post #5 of 5 (permalink) Old 07-15-2010, 09:52 AM
Phil G.'s Avatar
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Location: Peterborough, ON
Posts: 529
Just for the record for anyone with an auto reading this. There is no issue with a 99+ SD towing in OD. Now if it's a 90's GM auto (700r4 I think); that's a different story.
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