I have a 1993 Corvette, LT-1 with about 75K miles. I took it into Jiffy
Lube for an oil change.
A few days later, I started noticing blue exhaust when starting the engine
cold, such as in the morning.
Now, since I had never seen this before, I knew something was wrong. I
checked the oil level and sure enough,
Jiffy Lube put in about 1 quart too much oil. It was filled with 5W10
Synthetic (not Mobil one). I must have driven it
for a week or so with the oil level way high.
Took it back to Jiffy Lube, got them to drop the level down to normal.
I spoke to them about this and told them about the oil burning exhaust and
they said I would have to take it
to a certain local shop -- not a Chevy dealer -- to determine if they did
some damage. This is ridiculous. Like I am
supposed to trust a local shop that does work for Jiffy Lube when they fuck
up?
Couple questions:
1- Is it likely, that this has caused some damage to my engine?
2- If its determined at the local shop, or at a dealership that engine
damage has occured, such as some blown valve seals etc, what legal recourse
do I have to get this fixed properly? Jiffy Lube says they will pay for
repairs. But I really don't want the local non dealership shop working on
it. Can I force them to pay for the repairs done by a Chevy dealership?
Also, does this group have a FAQ? Never posted here before.
Thanks,
Jim Norton
Bob
"Jim Norton" <j...@clanad.org> wrote in message
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"Jim Norton" <j...@clanad.org> wrote in message
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Why do I take it to Jiffy Lube? Good question! I guess I learned my
lesson. Never had a problem
with any oil change shop before. Maybe I need to reconsider who does what
on my Vette.
Thanks,
Jim
"Jim Norton" <j...@clanad.org> wrote in message
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"Jim Norton" <j...@clanad.org> wrote in message
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It's fairly common for the LT1 to start sucking oil through the intake
gasket, it can happen anytime. More likely with higher miles but I've worked
on them with as low as 5K.
I've seen Camaros do it and 9C1's (iron heads) but it's more common for
Corvette LT1's due to (aluminum heads)
Overfilling your oil will increase oil pressure???????????
I'd like to see the eplaination of that!
< horrible oil overfill story deleted >
>1- Is it likely, that this has caused some damage to my engine?
I can remember two possible negative effects of having overfilled
the engine oil.
First is that there is more oil getting out through the crankcase
ventilation system which can get into the catalysators to be burned
there. This may damage the inner coating of the catalysators which
makes them work worse and therefore producing higher emissions.
Second is that the crankshaft may dip into the oil in the oil pan
while it's rotating. This can cause the oil to foam. If this foam
is sucked into the oil pump it causes a lack of lubrication in the
engine.
Both things AFAIK should only happen if the oil level is REALLY
high AND the engine is working under hard conditions.
If you never got an low oil pressure warning on your instruments
and you did not recognize an unnormal low oil pressure reading
on the pressure gauge during driving, the second effect shouldn't
have occured especially when you were driving descently.
The first you can check by letting a shop check your cars
emissions.
When I bought my LT-1 last year the dealer also overfilled the
engine oil. There should go in 4.3 liters and he refilled with
5 liters during the oil change. When I asked him why there's
too much oil in my engine he told me that the capacity would
be 4.7 liters and they would always fill in 5 liters into
Corvette engines which would be one normal canister over here.
For the first I was satisfied with that but soon I learned that
the 4.7 liters only apply to engines before the LT-1. Then I
found out that the correct capacity for the LT-1 is 4.3 and that
even in GM original manuals or other documents the capacity was
not correct for a while.
Therefore I corrected the oil level by draining some oil during
some other maintainance work on my Vette.
But I never experienced any problems while driving with the higher
oil level and haven't recognized defects regarding the overfilling
up to now.
CU,
Rolf
--
Rolf Michael Schneider - E-Mail: rolf.sc...@bingo-ev.de
'Happy ? "Datamerica" can help you solve that problem.'
- Revolter, 1996
90 red top coupe
"Chad Reynolds" <chadre...@hwusa.com> wrote in message
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And how did you come to this diagnosis?
If correct, what is the typical to repair it?
"Chick" <di...@chicdesign.com> wrote in message
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On the other hand, it does appear to run as before.
Thanks again,
Jim
'93 LT-1 Black 6-speed
Pictures of it here: http://www.team-army.com/~jrn/
"Baby Bubba" <bub...@buckeye-express.com> wrote in message
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"Chick" <di...@chicdesign.com> wrote in message
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