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carlherrnstein
 Post subject: Elusive oil leak
PostPosted: Sat Aug 21, 2010 6:13 pm 
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TBI Slant 6

Joined: Sat Dec 19, 2009 11:07 pm
Posts: 245
Location: ross county,ohio
Car Model:
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

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emsvitil
 Post subject:
PostPosted: Sat Aug 21, 2010 6:57 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
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.....

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

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olafla
 Post subject:
PostPosted: Sat Aug 21, 2010 7:07 pm 
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Turbo EFI
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Joined: Tue Jan 17, 2006 4:57 am
Posts: 1567
Location: Oslo, Norway
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Image Sorreeee...

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Joshie225
 Post subject:
PostPosted: Sat Aug 21, 2010 7:16 pm 
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Supercharged
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Joined: Thu Jan 27, 2005 8:32 pm
Posts: 7834
Location: Portland-ish
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One quart ever 1500 miles on that old an engine? You have high standards Sir. I myself would be perfectly happy.

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Dart270
 Post subject:
PostPosted: Sat Aug 21, 2010 8:59 pm 
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 17299
Location: Blacksburg, VA
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Unless my engines use more than 1 quart every 800 miles, I am quite happy.

Lou

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Charrlie_S
 Post subject:
PostPosted: Sun Aug 22, 2010 5:23 am 
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Joined: Sat Oct 19, 2002 12:06 pm
Posts: 8978
Location: Silver Springs, Fl.
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Back in the day, when these cars were new, the factory considered 1 qt per 1,000 mile acceptable.

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Charrlie_S
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emsvitil
 Post subject:
PostPosted: Sun Aug 22, 2010 2:26 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
Quote:
Back in the day, when these cars were new, the factory considered 1 qt per 1,000 mile acceptable.
They still do...........

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

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Doc
 Post subject:
PostPosted: Mon Aug 23, 2010 9:17 am 
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Joined: Mon Oct 14, 2002 4:32 pm
Posts: 4880
Location: Working in Silicon Valley, USA
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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
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carlherrnstein
 Post subject:
PostPosted: Mon Aug 23, 2010 10:12 am 
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TBI Slant 6

Joined: Sat Dec 19, 2009 11:07 pm
Posts: 245
Location: ross county,ohio
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OK, So it looks like this is not as big a deal as I thought. thanks for the reassurance.

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Slant6225Valiant73
 Post subject: Elusive OIl Leak
PostPosted: Mon Aug 23, 2010 12:10 pm 
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1 BBL (New)

Joined: Mon Aug 23, 2010 7:41 am
Posts: 6
Location: Santa Cruz California
Car Model:
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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