A10 Spilling Fluid at Track Day

Daboom48 · 11-23-2017, 02:23 AM

My A10 had performed well at 4 or 5 days at COTA. Midway through the weekend at Cresson, my A10 hit 275 Degrees and started dripping Fluid. First, did it overheat because of a transmission issue. Is there a hose that allows the transmission fluid to spill over if it gets to hot. Is there a better choice for trans fluid than the standard trans fluid?

Would already be at GM but I didn't want my car sitting in shop till next week...

Thought I would ask the forum your thoughts

Jmueller · 11-23-2017, 07:49 AM

Might have been overfilled from the factory. If so, it’s a known problem. I haven’t heard of it resulting in a spillover, but it would make sense if the A10 was overfilled. The pressure would have no where to go except pushing out of the seals.

7stringtheory · 11-23-2017, 07:57 AM

Quote:

Originally Posted by Daboom48

My A10 had performed well at 4 or 5 days at COTA. Midway through the weekend at Cresson, my A10 hit 275 Degrees and started dripping Fluid. First, did it overheat because of a transmission issue. Is there a hose that allows the transmission fluid to spill over if it gets to hot. Is there a better choice for trans fluid than the standard trans fluid?

Would already be at GM but I didn't want my car sitting in shop till next week...

Thought I would ask the forum your thoughts

Were you the zl1 with the zl1 1le wing? I was in the purple-black wrapped SS 1LE. The weekend at cresson was awesome, sorry to hear the transmission was giving you problems.

Dwille · 11-23-2017, 08:17 AM

I was in the red ZL1 1LE. I wondered where you went sorry to hear about your issues. :( Take it to the dealer. They will sort it put. Cresson was epic. I struggled for grip on the 1.7. Back to the Goodyears I go! The 3.1 on Monday was super fun. Hope to see you guys in the future.

Artos · 11-23-2017, 08:36 AM

I haven't heard anything regarding an overheating line?? I saw where the tranny fill plug is used to release any over fill & act as the fill line itself when at the right temp...wondering if the cap came loose / off???

FASTNUF · 11-23-2017, 09:18 AM

Was the trans fluid adjusted for track usage? Car track prep'd? Just asking because that could have cause it. Curious to know what you ultimately find out.

ICTsccaCamaro · 11-23-2017, 09:22 AM

All auto transmissions will have a vent tube, It's not necessarily for fluid to spill out but for pressure to be equalized in the transmission as temperatures heat up if fluid temperature gets too hot fluid can push itself out of the vent tube

Stephen12ZL1 · 11-23-2017, 10:35 AM

yes, it will push fluid out of the vent tube if overfilled and not the “seals”. My guess is the level is probably fine now. Follow procedures and check level to be sure. YouTube has a nice tutorial about the fluid level in all of the new auto transmissions.

BMWM.D. · 11-23-2017, 11:15 AM

That is one of the things GM says can happen due to the fluid being overfilled. Here’s a page from the service bulletin on this issue. And for what it’s worth, my car does not fall under this bulletin, but was overfilled.

Zl1steve · 11-23-2017, 12:16 PM

I hope gm handled the people that overfilled these or at least the people who were responsible. I have fired people for overfilling vehicles at my shop. Amazing how just double checking makes all the difference. We pay alot of Hard earned money for these cars.

Daboom48 · 11-23-2017, 12:19 PM

Quote:

Originally Posted by 7stringtheory

Were you the zl1 with the zl1 1le wing? I was in the purple-black wrapped SS 1LE. The weekend at cresson was awesome, sorry to hear the transmission was giving you problems.

Yes, that was me... didn't get to run the big track on Monday:(

ninetres · 11-23-2017, 01:00 PM

Make sure temp is 209* (not 175, not 230.....209 give or take a couple). Pull drain fill plug while car is running on lift, let any fluid drain out. Replace plug once it stops. Simple deal. Mine had 1/2–3/4qt extra in it.

11-23-2017, 02:23 AM	#1
Daboom48 Drives: 32 Ford 55 Nomad 69 Ve 14 M5 17 ZL1 Join Date: Dec 2016 Location: San Antonio, TX Posts: 47	A10 Spilling Fluid at Track Day My A10 had performed well at 4 or 5 days at COTA. Midway through the weekend at Cresson, my A10 hit 275 Degrees and started dripping Fluid. First, did it overheat because of a transmission issue. Is there a hose that allows the transmission fluid to spill over if it gets to hot. Is there a better choice for trans fluid than the standard trans fluid? Would already be at GM but I didn't want my car sitting in shop till next week... Thought I would ask the forum your thoughts

11-23-2017, 10:35 AM	#8
Stephen12ZL1 Drives: '21 ZLE A10 Join Date: May 2012 Location: Mechanicsville, VA Posts: 6,824	yes, it will push fluid out of the vent tube if overfilled and not the “seals”. My guess is the level is probably fine now. Follow procedures and check level to be sure. YouTube has a nice tutorial about the fluid level in all of the new auto transmissions. __________________ '21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60' '17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)

11-23-2017, 11:15 AM	#9
BMWM.D. Drives: ZL1/335i Join Date: Apr 2014 Location: Santa Barbara Posts: 870	That is one of the things GM says can happen due to the fluid being overfilled. Here’s a page from the service bulletin on this issue. And for what it’s worth, my car does not fall under this bulletin, but was overfilled. Attached Images

11-23-2017, 07:49 AM	#2
Jmueller Drives: 2017 ZL1 A10 Nightfall Gray Join Date: Jul 2017 Location: Fort Lauderdale Posts: 236	Might have been overfilled from the factory. If so, it’s a known problem. I haven’t heard of it resulting in a spillover, but it would make sense if the A10 was overfilled. The pressure would have no where to go except pushing out of the seals.

11-23-2017, 08:17 AM	#4
Dwille Drives: 2022 SS 1LE Join Date: Apr 2014 Location: Houston Posts: 228	I was in the red ZL1 1LE. I wondered where you went sorry to hear about your issues. :( Take it to the dealer. They will sort it put. Cresson was epic. I struggled for grip on the 1.7. Back to the Goodyears I go! The 3.1 on Monday was super fun. Hope to see you guys in the future.

11-23-2017, 08:36 AM	#5
Artos Drives: A10 LT4 Join Date: Aug 2016 Location: Deep South TX Posts: 1,094	I haven't heard anything regarding an overheating line?? I saw where the tranny fill plug is used to release any over fill & act as the fill line itself when at the right temp...wondering if the cap came loose / off???

11-23-2017, 09:18 AM	#6
FASTNUF Drives: 2017 ZL1 A10 White Vert Join Date: Aug 2017 Location: Katy Tx Posts: 151	Was the trans fluid adjusted for track usage? Car track prep'd? Just asking because that could have cause it. Curious to know what you ultimately find out.

11-23-2017, 09:22 AM	#7
ICTsccaCamaro Account Suspended Drives: 2018 ZL1 1LE Join Date: Jun 2012 Location: Wichita KS Posts: 1,585	All auto transmissions will have a vent tube, It's not necessarily for fluid to spill out but for pressure to be equalized in the transmission as temperatures heat up if fluid temperature gets too hot fluid can push itself out of the vent tube

11-23-2017, 12:16 PM	#10
Zl1steve Drives: Zl1 Join Date: Feb 2017 Location: Washington Posts: 195	I hope gm handled the people that overfilled these or at least the people who were responsible. I have fired people for overfilling vehicles at my shop. Amazing how just double checking makes all the difference. We pay alot of Hard earned money for these cars.

11-23-2017, 01:00 PM	#12
ninetres Drives: Crush ZLE M6 \| 2000 Corvette FRC Join Date: Jun 2010 Location: Cencal Posts: 1,659	Make sure temp is 209* (not 175, not 230.....209 give or take a couple). Pull drain fill plug while car is running on lift, let any fluid drain out. Replace plug once it stops. Simple deal. Mine had 1/2–3/4qt extra in it.

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