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Elusive oil leak
https://slantsix.org/forum/viewtopic.php?t=41552
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Author:  carlherrnstein [ Sat Aug 21, 2010 6:13 pm ]
Post subject:  Elusive oil leak

I have a 85 engine that loses 10w30 oil at a rate of 1qt per 1500 miles. The engine has well over 100k on it, it has relatively new front main seal new valve cover gasket/head gasket and valve seals. The exhaust has no blue smoke and I do not see any engine oil drips on the engine. I am for a loss. Can any one offer any suggestions.

Thanks for any help

Author:  emsvitil [ Sat Aug 21, 2010 6:57 pm ]
Post subject: 

At 1 qt per 1500 miles you won't notice any blue smoke........

It's most likely burning it off, and if the plugs don't get fouled, I wouldn't worry about it.....

Author:  olafla [ Sat Aug 21, 2010 7:07 pm ]
Post subject: 

Image Sorreeee...

Author:  Joshie225 [ Sat Aug 21, 2010 7:16 pm ]
Post subject: 

One quart ever 1500 miles on that old an engine? You have high standards Sir. I myself would be perfectly happy.

Author:  Dart270 [ Sat Aug 21, 2010 8:59 pm ]
Post subject: 

Unless my engines use more than 1 quart every 800 miles, I am quite happy.

Lou

Author:  Charrlie_S [ Sun Aug 22, 2010 5:23 am ]
Post subject: 

Back in the day, when these cars were new, the factory considered 1 qt per 1,000 mile acceptable.

Author:  emsvitil [ Sun Aug 22, 2010 2:26 pm ]
Post subject: 

Quote:
Back in the day, when these cars were new, the factory considered 1 qt per 1,000 mile acceptable.
They still do...........

Author:  Doc [ Mon Aug 23, 2010 9:17 am ]
Post subject: 

You may want to check the calibration of your dipstick... no joke.

On my 66 Dart wagon, if I fill it to the "Full" mark, on the dipstick, it will quickly drop back down to the add line, then stay there.
I later found-out that when at the full mark, there are 6 quarts in the engine. :? :roll:
These days, I run it at the add line and it "uses" way less oil.
DD

Author:  carlherrnstein [ Mon Aug 23, 2010 10:12 am ]
Post subject: 

OK, So it looks like this is not as big a deal as I thought. thanks for the reassurance.

Author:  Slant6225Valiant73 [ Mon Aug 23, 2010 12:10 pm ]
Post subject:  Elusive OIl Leak

Your engine is perfect. Mine on the other hand loses about a quart every 100 miles, im pretty sure its leaking but i dont get many drips on the driveway, must be accentuated under load. I was thinking worn valve guides but there is no blue smoke on startup.

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