Transmission fluid leak? - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
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post #1 of 88 (permalink) Old 08-19-2018, 10:59 AM Thread Starter
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Transmission fluid leak?

Hi guys,

Just pulled the 280z out of the driveway and noticed some red liquid on the floor I'm assuming this is manual transmission fluid, correct?

I will need to refill the transmission with fluid and will prob do it through the shifter hole as the plug filler hole is probably seized. I don't have the know-how to drop the transmission to change the seals (nor want to spend the $600+ dallahs) to have someone do this.

My question is has anyone tried stuff like this and has it worked - https://barsleaks.com/product/transm...k-concentrate/?

any ideas?

-chase

1978 280z - stock L28 engine - Dallas, TX
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post #2 of 88 (permalink) Old 08-19-2018, 11:17 AM
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Would not try that. Put a piece of white cardboard under the transmission and look under it the next day to see where the fluid leak is located before you do anything.

1975 280Z F54/N47 MSA 6-1 Header 2.5 Exhaust
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post #3 of 88 (permalink) Old 08-19-2018, 11:18 AM Thread Starter
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Would not try that. Put a piece of white cardboard under the transmission and look under it the next day to see where the fluid leak is located before you do anything.
Alright - and if it is from the transmission - what would you recommend short of pulling the transmission?

1978 280z - stock L28 engine - Dallas, TX
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post #4 of 88 (permalink) Old 08-19-2018, 03:23 PM
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Is the leak at the tail shaft or between the engine and the trans?
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post #5 of 88 (permalink) Old 08-19-2018, 03:40 PM
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Is the leak at the tail shaft or between the engine and the trans?
That is what the cardboard is for. Place under the tranny and then look up where you see the drips on it. Front seal, rear seal, or speedometer gear. The latter are inexpensive to reseal. Front requires trans removal.

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post #6 of 88 (permalink) Old 08-19-2018, 03:46 PM
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btw pulling the trans is no big deal, get some good jacks a HF scissor trans jack and have at it. while there replace the rear main/clutch if needed. One of the benefits of owning these old cars is you can DIY stuff like this.
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post #7 of 88 (permalink) Old 08-19-2018, 11:38 PM
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btw pulling the trans is no big deal, get some good jacks a HF scissor trans jack and have at it. while there replace the rear main/clutch if needed. One of the benefits of owning these old cars is you can DIY stuff like this.
Can be done, takes time and determination for someones first attempt. But if this is Chase's dd he may have issues.

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post #8 of 88 (permalink) Old 08-20-2018, 12:17 AM Thread Starter
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it seems to be coming out of the shiftier assembly cylinder where it bolts into the transmission

id have to pull and disassemble the transmission for this, right?

1978 280z - stock L28 engine - Dallas, TX
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post #9 of 88 (permalink) Old 08-20-2018, 10:25 AM
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Shifter assembly cylinder? Could you be talking about the clutch slave cylinder?
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post #10 of 88 (permalink) Old 08-20-2018, 11:18 AM
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on my ZX transmission (installed in my Z)oil was found where the shifter lever stabs into the tail of the transmission. there are a few o rings and seals in there. But I don't think would really account for much of a visible leak, as its high location and no pressure to force the oil out. It just a bit sloppy. most likely place is the speedo as its low where the oil tends to be.
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