what ATF do u use/do you have to use type F

Clutch, transmission, rear axle

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sharkdog
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what ATF do u use/do you have to use type F

Post by sharkdog »

Just wondering if I have to use type f in my transmission or could i use somthing like a full synthetic or a mercon based oil? also if you have an opinion on brands?( has anyone seen mobil 1 type f?)
1970 f-100 360 c-6 2wd ps/pb longbox
crazyhorse
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Re: what ATF do u use/do you have to use type F

Post by crazyhorse »

Use type F automatic transmission .
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averagef250
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Re: what ATF do u use/do you have to use type F

Post by averagef250 »

Type F is supposed to be a little grabbier than your standard Dex3.

I run Dex3 in anything that doesn't require synthetic and have never had an issue doing that. I've had some crappy old Ford autos and putting dex3 in made them worse, but if they worked on F they don't seem to care about Dex3.

For that matter you can Buy 5 gallons of ISO46 tractor hydraulic fluid for about $40 and get the same results too.

Standard trans shop practice seems to be fill everything with dex3 after rebuild.
1970 F-250 4x4 original Willock swivel frame chassis '93 5.9 Cummins/Getrag/NP205/HP60/D70
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Re: what ATF do u use/do you have to use type F

Post by Whateverman »

from my experience dexron will wreck the seals and wash the clutch material out in a type f transmission , type f is slightly thicker and isn't loaded with detergents like the dexron is. if you fill a dexron trans with type f it will shift abit harder but other than that there won't be any issues
- still got my first first car 20+yrs later : 69 f100 sorta kinda pretending its a Mercury M100 w/a 70 f350 sport custom cab (factory buckets) 67 grille with 69 ranger cooneyes 68 merc box and hood,some supercool fiberglass fenders i scored way back when, 76 f150 disc brake frontend..currently running a 90 5.0HO 4bbl/c4 auto & 3.50 posi...originally a 360/c6 f100 Ranger with dealer added towpack (incl. kelsey hays trailer brake),boxside toolbox,behind the seat stowage & belly tank...only original parts left on 'er are the frame,rear end,rear springs,and rear bumper...
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