Synthetic Oil for 4R100 transmission

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glenf - 26 Apr 2006 17:46 GMT

Who makes a compatible synthetic oil for the 4R100 transmission? Any tips
on changing it???

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Spdloader - 26 Apr 2006 17:50 GMT

> Who makes a compatible synthetic oil for the 4R100 transmission? Any tips
> on changing it???

Royal Purple, Redline, among others.

Do a Google search and read up, decide for yourself.

Change it when it's warm. It'll feel better running down your arm.

Spdloader

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SnoMan - 27 Apr 2006 00:44 GMT

>> Who makes a compatible synthetic oil for the 4R100 transmission? Any tips
>> on changing it???
[quoted text clipped - 6 lines]
>
>Spdloader

Walmart carries Mobile SYN ATF for under 6 bucks a quart. Not sure
what is gian by it though because even though it can take more heat,
the tranny seals cannot so if you service regularly with regular ATF
and keep it cool it will last just as long (or longer if you do not
regularly service it and keep it cool with SYN)
-----------------
The SnoMan
www.thesnoman.com

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rancher - 30 Apr 2006 23:42 GMT

I have been using Amsoil since 1987 with out any failures on any equipment
until I jacked up horsepower on my 97' F-350 crew. At 160,000 the rearend
bearings along with tranny have been replaced. All my fault. My 1986 350
crew with 485,000 still has all original parts. No other equipment
failures on the ranch except the 97'.

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SnoMan - 01 May 2006 00:16 GMT

>I have been using Amsoil since 1987 with out any failures on any equipment
>until I jacked up horsepower on my 97' F-350 crew. At 160,000 the rearend
>bearings along with tranny have been replaced. All my fault. My 1986 350
>crew with 485,000 still has all original parts. No other equipment
>failures on the ranch except the 97'.

I have had no failures at all in any automatic for 30 years and I have
towing, plowed snow and traveled mountain passes many time in summer
heat and I just you plain old dino ATF. The trick is keeping it cool
and keeping fluid fresh, not that it has to be SYN. I have a 27 year
old THM400 in a J20 that has had its butt worked off for years and
started its life as a farm truck and then pushed snow for many years
and tranny still works like new and snow plowing is hard on a tranny
too.
-----------------
The SnoMan
www.thesnoman.com

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