T-5 transmission fluid

dan46 · 01-16-2010, 08:49 PM

i'm putting a T-5 in my mustang and i'm wondering what fluid to use? I want to use some good stuff, preferably synthetic. My friend says GM synchromesh is really good in his dodge stealth. I was wondering if you guys had any experience with synthetic fluid and what is best? Mobil 1? B&M synthetic?

billet60 · 01-16-2010, 08:52 PM

royal purple

escort89 · 01-16-2010, 08:52 PM

royal purple is by far my favorite oil/lubricants

ca50 · 01-16-2010, 08:59 PM

get dexron III(3) or IV (4) with mercon you dont need a synthetic,and it will be exactly 3 quarts.

matt234 · 01-16-2010, 09:02 PM

I've always had good luck with plain old D/M III. I've heard some guys use lightweight 30W synthetic gear oil for track only use, but I have never tried it.

slow50 · 01-16-2010, 09:04 PM

i know ford recommends dexron/mercon but i wanted to put some better stuff. Has anyone used syncromesh from GM? my buddy uses it in his AWD Stealth and he says stealth guys swear by this stuff. I'm just curious because i want to put the best stuff in my transmission. something a little better than regular dexron/mercon

88fox · 01-16-2010, 09:07 PM

No, use D/M III.

Using other stuff will not be better, it will be a quick route to a rebuild.

bill87 · 01-16-2010, 09:11 PM

Quote:

Originally Posted by billet60

royal purple

+1.

1fatfox · 01-17-2010, 05:47 PM

Quote:

Originally Posted by slow50

i know ford recommends dexron/mercon but i wanted to put some better stuff. Has anyone used syncromesh from GM? my buddy uses it in his AWD Stealth and he says stealth guys swear by this stuff. I'm just curious because i want to put the best stuff in my transmission. something a little better than regular dexron/mercon

What would make Syncromesh "better" in a T5 and what is wrong with dexron/mercon? They are two different fluids with different characteristics. Maybe one is better then the other but I personally would not switch without some actual evidence or at least a theory of why one was better than the other in the T5. I did see that Amsoil suggests their version of Syncromesh can be used in a T5 although they make no claims of it being better in a T5 or that it is a replacement for Mercon/Dexron, only that it would be easier for the retailers to stock only Sycromesh instead of a bunch of different types of transmissions fliuds.

AMSOIL Manual Synchromesh Transmission fluid is a versatile transmission lubricant. It reduces inventory needs, is readily available and is cost effective compared to vehicle manufacturer branded products.
Recommended for automotive and light truck applications that require synchromesh transmission fluid. Applications include manual transmissions and transaxles such as New Venture NV T350, NV 1500, NV 2550, NV 3500, NV 3550, NV 5600, and Tremec T4, T5, T18, T56, T176, TKO500, TKO600, TR 3450 and TR 3550. Replaces MTF-94 fluid for Land Rover, MG, and Mini Cooper. Replaces Honda Genuine MTF fluid for manual transaxles and Texaco MTX fluid.

89fox · 01-17-2010, 05:54 PM

i would use AMSOIL but thats cause my buddy is a dealer and i get it cheap but for something like that i would use what ford says to use.