Leaking Motor Mount: So What ??
Thread Starter
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
Thread Starter
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
Instructor
Joined: May 2023
Posts: 217
Likes: 95
The motor mounts are fluid-filled so if they fail, you will see an oily residue around the rubber. If there is enough room for the engine to move around excessively, they will tear and leak the fluid out. You will also feel excessive vibration at idle in your interior.
Thread Starter
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
With high torque applications like our corvettes, cheap mounts will fail prematurely and you might end up doing the job 3x times so it's up to you.
The motor mounts are fluid-filled so if they fail, you will see an oily residue around the rubber. If there is enough room for the engine to move around excessively, they will tear and leak the fluid out. You will also feel excessive vibration at idle in your interior.
The motor mounts are fluid-filled so if they fail, you will see an oily residue around the rubber. If there is enough room for the engine to move around excessively, they will tear and leak the fluid out. You will also feel excessive vibration at idle in your interior.
As I said originally, I have no indications of any kind that something is abnormal with my car's sound or operation. I only noticed the rusty colored dried streaks on the driver side mount when oil was changed a couple of months ago. I only change my oil once a year now as I only put 2K miles/year on it. So it may have been leaking for a year or a month, I have no idea.
I thought I would get pictures of it today to share while my tires were being replaced but the car was not put on a lift. I will have to get pictures to share.
Safety Car
Joined: Oct 2007
Posts: 4,222
Likes: 1,080
From: South Florida
oil can resemble leaking motor mount fluid. Actually oil can dissolve the motor mount materials and combine with it to even more closely resemble a leaking motor mount. I would wipe the offending liquid and wash the mounts and re-inspect at time interval to confirm diagnosis. Oil could be leaking down from somewhere or splashed there during a change or spill. Since you do not drive frequently it could be months or years before you notice the real source of the leak and you have plenty of time to repair.
Thread Starter
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
oil can resemble leaking motor mount fluid. Actually oil can dissolve the motor mount materials and combine with it to even more closely resemble a leaking motor mount. I would wipe the offending liquid and wash the mounts and re-inspect at time interval to confirm diagnosis. Oil could be leaking down from somewhere or splashed there during a change or spill. Since you do not drive frequently it could be months or years before you notice the real source of the leak and you have plenty of time to repair.
I assumed if mount springs a leak it will completely leak out. Is that true? How much fluid is actually in there?
SHOULD I BE ABLE TO SEE A TEAR OR SOMETHING ELSE TO CONFIRM MOUNT ACTUALLY LEAKED, MAYBE SQUEEZING IT FOR CONFIRMATION ????
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