Transmission leaking? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

sam1 · 08-09-2023, 09:13 AM

Is this leaking from the gasket?

Had this look towards the back of the transmission pan. Was told it was the gasket and had it replaced. About over a year later seeing the leaking again.

It just seems to be around the back of the pan, could it really be the gasket again? As far as I can tell I don't see it coming from anywhere else. Just didn't expect the gasket to go bad again.

Muskoka800 · 08-09-2023, 11:30 AM

Are you confident the gasket was replaced? Looks like a bead of orange RTV along one edge.

Ultramaroon · 08-09-2023, 12:17 PM

Is there any fluid above the gasket line? If so, it's not the pan.

Most likely it was shoddy surface prep before applying the RTV.

sam1 · 08-09-2023, 01:18 PM

Quote:

Originally Posted by Ultramaroon

Is there any fluid above the gasket line? If so, it's not the pan.

Most likely it was shoddy surface prep before applying the RTV.

I don't see any above, and it's only on the back side of the back side where you see it in the pic. Everywhere else is clean. I'm thinking you're right about the bad prep work.

Quote:

Originally Posted by Muskoka800

Are you confident the gasket was replaced? Looks like a bead of orange RTV along one edge.

The RTV is connecting the other part, I know it looks like it's on the pan but if you look closely on the pan edge you can see the black gasket.

I had this done at Toyota, was hoping they would have done a better job.

Ultramaroon · 08-09-2023, 02:27 PM

Bummer. Squeezing extra hard is only going to warp the pan or strip the threads. Pan seals are tricky because oil is constantly oozing/wicking down the inside surface of the upper component. It takes a long time for that to slow enough for the sealant to set before more contaminant gets into the joint.

If it was mine, I'd pull the pan, let the transmission drip onto a tray for a couple days, and only then clean really well. I don't know how the job could be done effectively in an hour.

Muskoka800 · 08-09-2023, 04:44 PM

Quote:

Originally Posted by sam1

I don't see any above, and it's only on the back side of the back side where you see it in the pic. Everywhere else is clean. I'm thinking you're right about the bad prep work.

The RTV is connecting the other part, I know it looks like it's on the pan but if you look closely on the pan edge you can see the black gasket.

I had this done at Toyota, was hoping they would have done a better job.

Why not take it back to Toyota for resolution. They should stand behind their workmanship. There’s no harm in asking.

Grady · 08-10-2023, 09:59 PM

That much in a year, that is not a leak. Clean it up and move on with your life.

08-09-2023, 09:13 AM	#1
sam1 Junior Member Join Date: Dec 2022 Drives: GT86 Location: US Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Transmission leaking? Is this leaking from the gasket? Had this look towards the back of the transmission pan. Was told it was the gasket and had it replaced. About over a year later seeing the leaking again. It just seems to be around the back of the pan, could it really be the gasket again? As far as I can tell I don't see it coming from anywhere else. Just didn't expect the gasket to go bad again.

08-09-2023, 11:30 AM	#2
Muskoka800 Senior Member Join Date: Jul 2018 Drives: 2016 Scion FRS Release Series 2#439 Location: Chatham, Ontario, Canada Posts: 689 Thanks: 3 Thanked 150 Times in 123 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Are you confident the gasket was replaced? Looks like a bead of orange RTV along one edge. __________________ Edelbrock S/C with CSG 94 & 91 maps TRD Short Shifter, CTS/EvoX Brakes Ohlin’s R&T Dampers, Hotchkis F/R Bars, Blox LCA & Toe Arms 235F/245R Conti ECS on TRD/Enkei wheels (street), 245/40 sq. A052 on 17x8 720Form GTF2 wheels (track)

08-09-2023, 12:17 PM	#3
Ultramaroon chicken tonight Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,925 Thanks: 52,253 Thanked 36,589 Times in 18,966 Posts Mentioned: 1108 Post(s) Tagged: 9 Thread(s)	Is there any fluid above the gasket line? If so, it's not the pan. Most likely it was shoddy surface prep before applying the RTV. __________________ service manuals

08-09-2023, 02:27 PM	#5
Ultramaroon chicken tonight Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 31,925 Thanks: 52,253 Thanked 36,589 Times in 18,966 Posts Mentioned: 1108 Post(s) Tagged: 9 Thread(s)	Bummer. Squeezing extra hard is only going to warp the pan or strip the threads. Pan seals are tricky because oil is constantly oozing/wicking down the inside surface of the upper component. It takes a long time for that to slow enough for the sealant to set before more contaminant gets into the joint. If it was mine, I'd pull the pan, let the transmission drip onto a tray for a couple days, and only then clean really well. I don't know how the job could be done effectively in an hour. __________________ service manuals

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