78 Spider - trani oil fill location

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MrBlimp
Posts: 88
Joined: Thu Jun 15, 2017 12:03 am
Your car is a: 1978 Fiat 124 Spider
Location: Chichester, NY

78 Spider - trani oil fill location

Postby MrBlimp » Mon Aug 14, 2017 4:06 pm

I've reviewed the manual - it states "After transmission is installed in car, add 1 3/4 quarts of SAE 90 oil containing antiwear additives. Do not use EP oil."

My manual (5sp) trani is leaking and probably needs more oil. So where do you fill it - there doesn't seem to be any indication in the manual of the fill location, just the drain.
69 Triumph Spitfire
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78 Fiat 124 Spider
92 Mustang LX
00 Jeep Wrangler Sport 4.0L - Totaled
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GeorgeT
Posts: 379
Joined: Thu Feb 16, 2012 12:41 pm
Your car is a: 1982 Fiat 124 Spider

Re: 78 Spider - trani oil fill location

Postby GeorgeT » Tue Aug 15, 2017 9:01 am

The fill port is on the passenger's side of the transmission a couple of inches above the drain port. Always remove the fill port plug before removing the drain port plug.

TX82FIAT
Posts: 1814
Joined: Mon May 03, 2010 11:04 am
Your car is a: 82 Fiat Spider 2000 CSO
Location: San Antonio

Re: 78 Spider - trani oil fill location

Postby TX82FIAT » Tue Aug 15, 2017 12:56 pm

Try to change trans oil on level ground and fill the trans case until it just starts to drip out of the filler hole. Using a pump from the side or gravity line from the top. I would be careful with any additives in the oil. GL1 is a basic 90 weight mineral oil. additives can have all kinds of negative effects on the yellow metals in your syncro mesh trans. If you remove trans pan for any reason make sure it is clean with new gasket properly torques down or you will battle a trans pan leak for the near future.
Buon giro a tutti! - enjoy the ride!

82 Fiat Spider 2000
03 BMW M3
07 Chevy Suburban

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kilrwail
Posts: 1099
Joined: Wed Mar 04, 2009 6:49 am
Your car is a: 1978 Fiat 124 Sport Spider
Location: Perth, Ontario

Re: 78 Spider - trani oil fill location

Postby kilrwail » Tue Aug 15, 2017 3:32 pm

And if you remove the pan, flatten out all the dimples around the attaching bolts thoroughly before you reinstall the pan, or it will leak there, even with a new gasket.
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Peter Brownhill

1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor

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Texsardo
Posts: 216
Joined: Fri May 09, 2014 1:15 am
Your car is a: 1978 Fiat Spider Convertible 1800
Location: Post Falls, Idaho
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Re: 78 Spider - trani oil fill location

Postby Texsardo » Tue Aug 15, 2017 10:17 pm

Flattening out the dimples. Great idea. My 78 differential has a minor leak on back plate. Bet if I took it off again ( replaced gasket months ago and bet that is the problem) and gently flattened around bolt holes,, it would help.

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RRoller123
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Posts: 8179
Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: 78 Spider - trani oil fill location

Postby RRoller123 » Wed Aug 16, 2017 7:00 am

As well as the main fill and drain plugs, don't forget this small drain plug, at the rear of the transmission, bottom of this picture. It drains about a 1/2 cup that gets trapped behind some sort of interior baffle, and usually comes out pretty dirty. No separate fill for it, just the main fill.

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