79 vette 4speed trans /

[gerald mindenhall]

79 vette with 4 speed , i was under my car and decided to check the tranny oil
as i had never checked it in the fourteen years i,ve owned the car i removed the top plug and a whole bunch of grey oil came pouring out
what ever it was was above the fill hole i drained the whole trans and ended up with the greyest oil i,ve ever seen ?
ive never driven in the rain pressure washed under the car and never parked it in a lake or river has any one seen anything like this before
im going to run the car with new oil and check it again in a few weeks to see if its ok

 

[ddgermann]

79 vette with 4 speed , i was under my car and decided to check the tranny oil
as i had never checked it in the fourteen years i,ve owned the car i removed the top plug and a whole bunch of grey oil came pouring out
what ever it was was above the fill hole i drained the whole trans and ended up with the greyest oil i,ve ever seen ?
ive never driven in the rain pressure washed under the car and never parked it in a lake or river has any one seen anything like this before
im going to run the car with new oil and check it again in a few weeks to see if its ok

Humidity will get in through the vent. Not surprised after 14 years.

Great you changed it. Should be good for at least another 10. Maybe check it Every 5 years.
Easy @turbozig Im kidding. I’m sure he will be checking annually now.

Says a lot about the ruggedness of these transmissions.

Good post. @gerald mindenhall

 

[CorvetteRon]

79 vette with 4 speed , i was under my car and decided to check the tranny oil
as i had never checked it in the fourteen years i,ve owned the car i removed the top plug and a whole bunch of grey oil came pouring out
what ever it was was above the fill hole i drained the whole trans and ended up with the greyest oil i,ve ever seen ?
ive never driven in the rain pressure washed under the car and never parked it in a lake or river has any one seen anything like this before
im going to run the car with new oil and check it again in a few weeks to see if its ok

I changed the trans. oil in my '76 about twenty years ago.
I put in synthetic trans oil even though everyone said it would affect the syncro ring action.
No problems though and it is still in there.

 

[Fred J]

Very fine metal particles from wear over the years can also turn the oil to a greyish color. Try a magnet on the old oil to see if there are any metal particles of concern.