T-5 Tranny?

Philossifer · 07-12-2003, 01:43 PM

Anyone ever heard of running 10W/30 synthetic oil in a T-5 instead of Mercon Automatic Transmission Fluid?

The guy at the local transmission shop says they do it all the time! He claims, they shift smoother and run much quieter.

I don't know..... Doesn't sound right to me?
Any comments?
Phil

Roket · 07-12-2003, 03:52 PM

yeah, i have heard it...but i use redline tranny fluid

rbohm · 07-14-2003, 09:19 AM

if you want a fried tranny use it. otherwise the redline fluid is best.

tmoss · 07-14-2003, 07:53 PM

Why not use synthetic transmission fluid instead? I've run Mobil 1 synthetic trans fluid for years.

QuantumMotorsports · 07-17-2003, 02:08 PM

Don't the non World Class T-5's use gear oil like rear ends do? That's what I've heard, maybe i'm wrong.

07-17-2003, 02:57 PM

Quote:

Originally posted by QuantumMotorsports
Don't the non World Class T-5's use gear oil like rear ends do? That's what I've heard, maybe i'm wrong.

I've never heard of that. Rearend fluid seems a bit to thick for a tranny.

Coupe50h · 07-18-2003, 03:45 AM

omg, i wouldnt try that, but i was told you can use type-f atf fluid, and that it keeps it cooler, i tried it, and everything went well, but i ended up going back to cheap ole dexron/mercon, why spend money on high dollar synthetics? besides, if you race alot, synthetic, or 10/30 isnt gonna save it from breaking if it;s gonna break, it will break, regardless what fluid is in it, why not just use what for intended?

QuantumMotorsports · 07-18-2003, 09:02 AM

Older manual transmissions use gear oil, the only reason T5s don't is because the bearings are so small and the gear oil doesn't penetrate them, this is what I'm told.

07-12-2003, 01:43 PM	#1
Philossifer Registered Member Join Date: Apr 2003 Posts: 69	T-5 Tranny? Anyone ever heard of running 10W/30 synthetic oil in a T-5 instead of Mercon Automatic Transmission Fluid? The guy at the local transmission shop says they do it all the time! He claims, they shift smoother and run much quieter. I don't know..... Doesn't sound right to me? Any comments? Phil

07-14-2003, 09:19 AM	#3
rbohm Registered Member Join Date: Jul 2002 Location: tucson,az/luray,va Posts: 243	if you want a fried tranny use it. otherwise the redline fluid is best. __________________ define irony: a bunch of idiots on a plane, dancing to a song made famous, by a band who died in a plane crash. fordsix.com admin

07-14-2003, 07:53 PM	#4
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Why not use synthetic transmission fluid instead? I've run Mobil 1 synthetic trans fluid for years. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

07-17-2003, 02:08 PM	#5
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Don't the non World Class T-5's use gear oil like rear ends do? That's what I've heard, maybe i'm wrong. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

07-18-2003, 03:45 AM	#7
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	omg, i wouldnt try that, but i was told you can use type-f atf fluid, and that it keeps it cooler, i tried it, and everything went well, but i ended up going back to cheap ole dexron/mercon, why spend money on high dollar synthetics? besides, if you race alot, synthetic, or 10/30 isnt gonna save it from breaking if it;s gonna break, it will break, regardless what fluid is in it, why not just use what for intended? __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

07-12-2003, 03:52 PM	#2
Roket Registered Member Join Date: May 2002 Location: Ottawa illinois Posts: 41	yeah, i have heard it...but i use redline tranny fluid

07-18-2003, 09:02 AM	#8
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Older manual transmissions use gear oil, the only reason T5s don't is because the bearings are so small and the gear oil doesn't penetrate them, this is what I'm told. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
tranny swap?	03stangGT	Modular Madness	7	11-19-2006 08:57 AM
Anyone running a C-4 tranny I need HELP!!!!!!!!	mattcstang	Racer's Club House	5	09-07-2006 11:43 PM
Yet another tranny fluid ??	Simi Stang	Windsor Power	4	09-30-2003 12:44 PM
Tranny update...Lentech VB	silver_pilate	Blue Oval Lounge	10	05-02-2002 12:34 PM
This is bad! Did my Uncle cause my Racing tranny to overheat?(It's a long 1... sorry)	Stang_ROTY	Windsor Power	1	08-30-2001 10:55 PM