Proper T5 trans fluid

BLACK85GT · 04-26-2003, 04:23 PM

I know it uses auto matic fluid, but which spec? dextron? mercon? I want to run a synthetic.

84LX89GT · 04-26-2003, 07:45 PM

It uses Mercon III/Dexron

I put Mercon V in mine (which is synthetic) and it works great.

BLACK85GT · 04-26-2003, 09:24 PM

Are all mercon V oils synthetic? Thats what my f150 uses. I just bought some for my truck, Castrol, and it says it is part synthetic.

Blownup5.0 · 04-27-2003, 10:11 AM

I've been using Red Line manual trans. fluid for the past 3 years in my T5. I change it about every 5000miles. I also put in a container of automatic trans. treatment from Prolong in it with the Red Line. I run 2.5 quarts of Red Line and 1 container of Prolong automatic trans. treatment. This stuff work great. It makes the trans. really smooth when shifting. The Prolong can be found at PepBoy's.

04-26-2003, 04:23 PM	#1
BLACK85GT Registered Member Join Date: May 2002 Location: Tampa,FLORIDA Posts: 340	Proper T5 trans fluid I know it uses auto matic fluid, but which spec? dextron? mercon? I want to run a synthetic. __________________ 5.0, Holley heads, 1.7 Scorp Rockers, Stealth intake, Holley 600 carb, Holley Mech. Fuel pump, MSD 6Digital, MSD distributor, Hotchkis upper/lower rear control arms, FMS B Springs, 3:73 (8.8) rear. Production # 9,377

04-26-2003, 07:45 PM	#2
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	It uses Mercon III/Dexron I put Mercon V in mine (which is synthetic) and it works great. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

04-26-2003, 09:24 PM	#3
BLACK85GT Registered Member Join Date: May 2002 Location: Tampa,FLORIDA Posts: 340	Are all mercon V oils synthetic? Thats what my f150 uses. I just bought some for my truck, Castrol, and it says it is part synthetic. __________________ 5.0, Holley heads, 1.7 Scorp Rockers, Stealth intake, Holley 600 carb, Holley Mech. Fuel pump, MSD 6Digital, MSD distributor, Hotchkis upper/lower rear control arms, FMS B Springs, 3:73 (8.8) rear. Production # 9,377

04-27-2003, 10:11 AM	#4
Blownup5.0 Registered Member Join Date: Jan 2003 Location: Loganville, GA Posts: 19	I've been using Red Line manual trans. fluid for the past 3 years in my T5. I change it about every 5000miles. I also put in a container of automatic trans. treatment from Prolong in it with the Red Line. I run 2.5 quarts of Red Line and 1 container of Prolong automatic trans. treatment. This stuff work great. It makes the trans. really smooth when shifting. The Prolong can be found at PepBoy's. __________________ 1990LX Hatchback, 3100lbs. w/driver, stock shortblock, stock cam, 1.7 rockers, E7 heads with Crane springs and exhaust bumps removed from exhaust ports, Cobra intake, 65mm T/B, 73mm MAF, MAC coldair kit, underdrive pullies, 1 5/8 longtubes, off road hpipe, Dynomax Race Magnums, T5, Hurst shifter, 3.73's, solid upper and lower control arms, Competition Enginnering rear drag springs, 50/50 drag shocks, front swaybar removed, etc.

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