Fox Which Amsoil ATF to use

limp · Dec 23, 2022

Does anyone have any experience with which Amsoil ATF to use in a manual?
There is 4 or 5 options and not enough info for me to make a decision?
thanks

General karthief · Dec 23, 2022

Did you get a recommendation from the trans manufacturer?

Mustang5L5 · Dec 23, 2022

General karthief said:
Did you get a recommendation from the trans manufacturer?

Tremec recommends their own line of fluid for their trans. Hard to get a non-Tremec fluid recommendation for the tkx.

I’ve actually never used Amsoil in any products I own. It’s hard to find where I live.

limp · Dec 23, 2022

Mustang5L5 said:
Tremec recommends their own line of fluid for their trans. Hard to get a non-Tremec fluid recommendation for the tkx.

I’ve actually never used Amsoil in any products I own. It’s hard to find where I live.

Try to find some Tremec fluid its been unobtainable ...Although I havent looked recently... Tremec told me to use Dexron III/Mercon in my TKX... Originally was told to use Syncromesh, but that was changed to DExron III/Mercon.....
I believe the TKO and the other Tremec manuals from that era use Syncromesh fluid....
NOT a believer in snake oil, but I started using Amsoil in my Harley and have had good results with it and I think I am going to up my 3 liter Duramax to 5-30 from the 0-20 GM recommends.... Amsoils 5-30 meets the Dexos D requirement by GM..... Being in Florida ( except for this weekend) I don't think the cold weather oil is necessary.....
Looking into Amsoils " preferred" customer program where they are saying " up to" 25% off and free shipping over a certain purchase amount... So might be making a somewhat of a large order.... Looking at what all of their product I can use.....

AeroCoupe · Dec 23, 2022

I have to run the synchromesh in my TKO (late 90's model) and I use Penzoil's version with zero issues. As for my T5 I use Amsoil in it and this is what I run:

Blog | Articles & Videos | Modern Driveline

View the Modern Driveline blog for helpful articles, videos, and DIY resources. We are your trusted source for everything manual transmission conversion.

www.moderndriveline.com

Click on the Amsoil ATF link within the link I posted above and it will direct you to which one. It can be had cheaper than from Modern.

rednotch · Dec 23, 2022

Old tko/3550 pensoil or gm synchomesh. T5/tkx good old valvoline max life.

Only fluid that any manual transmission I owned hated was royal purple synchromax in a 3550. Killed the brass synchro with a simple maintenance fluid change, went from shifting fine to the synchros not slowing the gear down even just cruising that's back when they marketed it as compatible with gm synchromesh.

limp · Dec 24, 2022

rednotch said:
Old tko/3550 pensoil or gm synchomesh. T5/tkx good old valvoline max life.

Only fluid that any manual transmission I owned hated was royal purple synchromax in a 3550. Killed the brass synchro with a simple maintenance fluid change, went from shifting fine to the synchros not slowing the gear down even just cruising that's back when they marketed it as compatible with gm synchromesh.

Royal Purple is NOT recommended in a TKX....

rednotch · Dec 24, 2022

limp said:
Royal Purple is NOT recommended in a TKX....

I wouldn't recommend it for anything but 20 years ago they recommended it for 3550... Mine hated it, put new syncho rings in a couple weeks later.

Tkx I would just run basic dexIII for the break in atleast.

limp · Dec 24, 2022

rednotch said:
Tkx I would just run basic dexIII for the break in atleast.

Thats my plan, but at the 500 mile change I wanted to use a synthetic Dexron III/Mercon..
If you look at the " automatic" trans fluid page on the Amsoil site, its one of the first 3, I am guessing the 2nd one is the one I will use...

AeroCoupe · Dec 24, 2022

I will also say that the Mobil 1 synthetic ATF is also really good stuff. Ran it for years before I switched to the Amsoil and only switched as I got really good pricing on the Amsoil. Dealer hooked me up with a mechanic rate account so I couldn’t say no.

Mustang5L5 · Dec 24, 2022

That’s all that I’ve ever run in my T5 (Mobil 1)

General karthief · Dec 24, 2022

AeroCoupe said:
Ram it for years before I switched

Ahhhhh, yeah, not what I would've said
@Noobz347

AeroCoupe · Dec 24, 2022

Yeah well can blame that typo the small keyboard on my phone for that one. Fixed but if it were true I’d claim it.

96pushrod · Dec 24, 2022

Pretty much most “multi vehicle” atf will meet Mercon/dex III specs. I like the redline atf, the d4 or high temp.

Or go get you some valve line maxlife or Castrol multi vehicle and be on your way.

slow84lx · Dec 25, 2022

I recently used Amsoil in my F150 M5OD when I converted it to manual. I don't remember which I used but read the Amsoil information and based the choice on that. It seems to have worked very well since.

This was my first usage of Amsoil products and found that it was easy to use. There is a dealer near me that placed the order, someone who works out of their home, but the order was drop shipped. It was an easy transaction.

Fox Which Amsoil ATF to use

limp

wrap a little cheese around it and its a done

General karthief

wonder how much it would cost to ship you a pair

Mustang5L5

That is…until I whipped out my Bissell

limp

wrap a little cheese around it and its a done

AeroCoupe

lube between the nut and the face. I know my lubes

Blog | Articles & Videos | Modern Driveline

rednotch

I'd like to remain having one chocolate starfish

limp

wrap a little cheese around it and its a done

rednotch

I'd like to remain having one chocolate starfish

limp

wrap a little cheese around it and its a done

AeroCoupe

lube between the nut and the face. I know my lubes

Mustang5L5

That is…until I whipped out my Bissell

General karthief

wonder how much it would cost to ship you a pair

AeroCoupe

lube between the nut and the face. I know my lubes

96pushrod

I think they're a little easier to get off

slow84lx

clean it good before insertion

Similar threads

Fox Which Amsoil ATF to use

wrap a little cheese around it and its a done

wonder how much it would cost to ship you a pair

That is…until I whipped out my Bissell

wrap a little cheese around it and its a done

lube between the nut and the face. I know my lubes

I'd like to remain having one chocolate starfish

wrap a little cheese around it and its a done

I'd like to remain having one chocolate starfish

wrap a little cheese around it and its a done

lube between the nut and the face. I know my lubes

That is…until I whipped out my Bissell

wonder how much it would cost to ship you a pair

lube between the nut and the face. I know my lubes

I think they're a little easier to get off

clean it good before insertion

Similar threads

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Privacy & Transparency