North American Turbocoupe Organization

Rear end Lube
Gregg Offline
Senior Member
#1 seal at the rear end is bad, and i Have to replace it.. becasue of this i am losing oil...
My question is, what should I use in the meantime? The leak isn't that bad....

It's an 87 TC, 5 Speed..
Also, is there anyway I can check the tranny fluid?

1987 TC 5 Speed
K&N Cone mounted on the VAM, soon to be front mounted, Disconnectd BCS

Pete D Offline
I think I used 80-115W in mine. You can check the fluid in the tranny by removing the upper of the two plugs on the passenger side of the trans. Use Dexron II or III in the trans.

88 TC X 2, 86 SVO, Main TC with K&N, 3"DP to 2.5"duals through Dynamax, Ric valve at 17+ and disconnected KS.
Elite Bodega 16" chrome wheels. Autometer pod w/ A/F and Vac/boost gauges. New engine: Total Seal rings and TRW pistons, ported and polished head w/ cc'd chambers,1.59"exhausts, SS valves, gutted upper, knife edged lower, A-230 cam, Race Engineering Adj Cam Sprocket, Crowlers, ARP head studs, and rod bolts. Walbro 190 pump and T-3. Centerforce II, KB subs and jack rails.
Pete Dunham


Jeff K Offline
Rear end: just get some 75W90 or 80W90 hypoid gear lube from the parts store to refill the rear (the stuff that smells so bad it makes you want to puke). After you get the leak fixed, I suggest going to a synthetic, like Mobil 1 gear lube. If you use the Mobil 1, you dont have to add friction modifier.

Tranny: there is a check / fill plug about half to 2/3 of the way up the tranny, located directly above the drain plug. It is on the pass side, if my memory serves me correctly. The fluid (Dextron II or III auto tranny fluid is what is used in the World Class T5) should be up to the bottom of the check / fill hole. If low, just add until it overflows out the hole.

Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 20 psi, forced air intercooler, water injection, bypass valve, Ranger roller cam, subframes, etc., etc.. // 86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP nitrous, ignition, gears, suspension, etc., etc.... // 91 Escort: Bone stock winter car // 00 Windstar (wifes vehicle)
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

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