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Pulled the car out today, to my surprise there was a small puddle of fluid. Did the car guy test, stuck my finger in it and rubbed. To my surprise it's the dreaded brake fluid. I suspect it was from the front lift pre blue cap and has worked down to a drip. Lift reservoir is full, brake reservoir looks to be full. I'll pull it out and do a clean up, with water and soap maybe a simple green flush to clean off the mess. Anyone had to clean this up under the front, insight is appreciated. Will update after clean up and its dry. More in-depth look tomorrow
Pulled the car out today, to my surprise there was a small puddle of fluid. Did the car guy test, stuck my finger in it and rubbed. To my surprise it's the dreaded brake fluid. I suspect it was from the front lift pre blue cap and has worked down to a drip. Lift reservoir is full, brake reservoir looks to be full. I'll pull it out and do a clean up, with water and soap maybe a simple green flush to clean off the mess. Anyone had to clean this up under the front, insight is appreciated. Will update after clean up and its dry. More in-depth look tomorrow
I was hoping this issue had been put to bed.
"Full" may be the problem. I have a very late build 2020 that came with a black reservoir cap, and never detected evidence of a leak. I then received a replacement blue cap last spring.
I credit my lift reservoir not being filled to the max line for my "no leaks." The level was just above the ribs inside the reservoir and as shown by the red line in the photo below
Some of those that did have leaks reported the corrosive brake fluid stripped the black paint from metal parts surrounding the reservoir.
Thank you, I was having the same thought. Car just came back from service I am wondering if they topped it off <over filled> while changing the cap out. Pulled the blue cap off, signs of fluid all around the cap and threads residual fluid on the casing. I'll double check that level tomorrow and remove fluid if needed. I'll get it washed down to stop any problems. Ironic, since im the guy that will never get a good toy wet. Going to be a real pain, cleaning all off water spots and crap. Well chit happens, minor in the grand scheme of the world.
"Full" may be the problem. I have a very late build 2020 that came with a black reservoir cap, and never detected evidence of a leak. I then received a replacement blue cap last spring.
I credit my lift reservoir not being filled to the max line for my "no leaks." The level was just above the ribs inside the reservoir and as shown by the red line in the photo below
Some of those that did have leaks reported the corrosive brake fluid stripped the black paint from metal parts surrounding the reservoir.
Fluid level in my lift reservoir marked in red.
Yep, followed the issue carefully from when it was 1st reported. I have a September 2020 built C8 with Lift. Mine had a minor leak with fluid level just below the center rib. Put on a wrist sweat band after I got a new black cap and had no issue. But had the dealer install the Blue cap and has been zero issues for >6 months.
Had calculated from careful measurements and a poster video's of it operating (with a remote camera as have to have the Frunk closed.) Frankly there is enough fluid to have the lift work fine with the lop reservoir empty! The lower reservoir has enough fluid! A member with their fluid half way between the center rib and bottom of the top reservoir worked fine and had no leaks. That was my plan to lower my level before GM came up with the Blue Cap solution.
To reinforce that is was the level, the Corvette Marketing guy Harlan Charles was quoted as saying it's a short term issue since as the fluid level lowers the leak goes away!
If concerned, remove enough fluid to have it half way between the upper reservoir center rib and the bottom. Just look at the lower reservoir and you'll see it holds a lot of fluid!
My Calculations: Bytor Video data and where his level was set with ZERO leaks!
Confirmed. Stopped by the dealer and talked with the tech. Maybe kinda sorta a junior tech may have accidently topped off the fluid in the lift. Wasnt worth getting the guy reamed out over. Pulled the car out, over the french drains mixed up 2 gallons of warm water with Dawn, then another 2 gallons mixed simple green. Covered the cap with saran wrap and a rubber band as a precaution, Slowly poured the mixtures down, then rinsed well , appears to have removed the contamination film well. Good 20 minutes with the Master Blaster to dry it all off (yes including the shock tower> Few pics for future ref included. For those debating the front lift, and i was surprised myself. The car parked at the garage over the french drain, nose wasnt on the floor. But there isnt more than an inch in the lowered position. Pics posted for those who need to reference in the future. After rinse off, Front lift down Less than 1 inch to spare close up lowered Front lift Up Master Blaster for drying off water
You know, this is probably a good catch. I never thought about the fact it might get "topped off" during a service visit.
I need to make a sign to attach to the blue filler cap. "DO NOT TOP OFF. DO NOT FILL ABOVE MID-LINE".
I used to have signs taped to my engine air filter boxes because those quick oil change places will always TEAR INTO them trying to get the filter out to prove you need a new filter (even though I manage the filter replacement myself).
Then after you tell them the filter was replaced last month and to stop ripping people off, they try to cram it back in there, break the tabs off, don't properly lock the airbox back together and you have sand and dirt sucking past your filter now.
Nice big sign, "DO NOT OPEN. I WON"T BUY YOUR DAMN FILTER."
Then after you tell them the filter was replaced last month and to stop ripping people off, they try to cram it back in there, break the tabs off, don't properly lock the airbox back together and you have sand and dirt sucking past your filter now.
Reminds me of back in 1984 when I had a Goodyear store check the freon in an S10. I was 24 and was working in a white collar job and they assumed I didn't work on my own cars. (which I did). They said "can we do a free 25 point check?" I said I didn't care if they wanted to do it. The service writer came out with bad news. Said I needed a new compressor and the 25 point check shows I needed all new belts, coolant, and shocks. I had put new belts on the truck two weeks earlier and the shocks were less than a year old. I said don't touch my truck, take it off the lift I'm done. Went around the corner and after the refrigerant got charged, the A/C was fine. I went from them wanting $900+ to $20.
Last edited by Phil1098; Oct 11, 2021 at 02:41 PM.
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Brake fluid cleanup
