Fluid venting on track days.. 2015 Z51
08-24-2017, 02:07 PM
#1
Fluid venting on track days.. 2015 Z51
After several trips to the dealer, the cause of green fluid puddling under my vehicle after coming home from track events has been found.
Manual transmission fluid is venting out of the transmission. It's not an insignificant amount. Also, after my latest track day, there was brake fluid coming out of the brake fluid reservoir cap, and also puddling on the garage floor.
Last year the differential failed when on the track and was replaced.
I use high wet point Motul, and Mobil 1 15-50. I have the brake and differential and clutch fluid replaced at least once a season.
The dealer says the venting is normal when the car is pushed car and it's operating like it's supposed to.
Doesn't seem normal to me. The Z-51 with the additional cooling ducts IMO shouldn't be doing this.
Any similar experiences?
Manual transmission fluid is venting out of the transmission. It's not an insignificant amount. Also, after my latest track day, there was brake fluid coming out of the brake fluid reservoir cap, and also puddling on the garage floor.
Last year the differential failed when on the track and was replaced.
I use high wet point Motul, and Mobil 1 15-50. I have the brake and differential and clutch fluid replaced at least once a season.
The dealer says the venting is normal when the car is pushed car and it's operating like it's supposed to.
Doesn't seem normal to me. The Z-51 with the additional cooling ducts IMO shouldn't be doing this.
Any similar experiences?
08-24-2017, 05:42 PM
#2
Safety Car
After several trips to the dealer, the cause of green fluid puddling under my vehicle after coming home from track events has been found.
Manual transmission fluid is venting out of the transmission. It's not an insignificant amount. Also, after my latest track day, there was brake fluid coming out of the brake fluid reservoir cap, and also puddling on the garage floor.
Last year the differential failed when on the track and was replaced.
I use high wet point Motul, and Mobil 1 15-50. I have the brake and differential and clutch fluid replaced at least once a season.
The dealer says the venting is normal when the car is pushed car and it's operating like it's supposed to.
Doesn't seem normal to me. The Z-51 with the additional cooling ducts IMO shouldn't be doing this.
Any similar experiences?
Manual transmission fluid is venting out of the transmission. It's not an insignificant amount. Also, after my latest track day, there was brake fluid coming out of the brake fluid reservoir cap, and also puddling on the garage floor.
Last year the differential failed when on the track and was replaced.
I use high wet point Motul, and Mobil 1 15-50. I have the brake and differential and clutch fluid replaced at least once a season.
The dealer says the venting is normal when the car is pushed car and it's operating like it's supposed to.
Doesn't seem normal to me. The Z-51 with the additional cooling ducts IMO shouldn't be doing this.
Any similar experiences?
07-27-2022, 07:14 PM
#5
Update. Car finally towed to the specialty corvette shop that installed the catch can. (After the eBay transmission arriving in a busted open garbage plywood and cardboard box. GGRRR with the input shaft sticking out of the cardboard.)
Shop says they will have the tranny torn down and inspected to determine the failure to see if it was their fault. Don't have my hopes up. The coincidence of having a two inch hole blow out of the bottom of the transmission after an 80 mile drive to the track then on the first track session after them wrenching on it, it is frustratingly coincidental. If they don't cover it I'll be out probably $10K plus for the tranny and body work cost.
WILL NOT be installing the catch can on my new (used) tranny.
Updates to come.
Shop says they will have the tranny torn down and inspected to determine the failure to see if it was their fault. Don't have my hopes up. The coincidence of having a two inch hole blow out of the bottom of the transmission after an 80 mile drive to the track then on the first track session after them wrenching on it, it is frustratingly coincidental. If they don't cover it I'll be out probably $10K plus for the tranny and body work cost.
WILL NOT be installing the catch can on my new (used) tranny.
Updates to come.
07-29-2022, 10:57 PM
#6
Race Director
Member Since: Mar 2001
Location: Bonneville Salt Flats, 223mph Aug. '04
Posts: 17,508
Received 5,251 Likes
on
3,480 Posts
An "Advanced search" across the C7 Forums will disclose others who have the same experience to differing degrees. Despite GM's marketing hype these things are but pseudo-race(track) cars, at best. Just sayin'... 