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Old 08-05-2005, 04:42 PM   #1
Scooby Newbie
Member#: 89883
Join Date: Jun 2005
Default Too much oil

When changing the oil on my wife's 2002 Subaru Outback 4 cyl. I replaced the oil and filter and used only 4 qts instead of the 4.2 the owner's book calls for so that I could top it off to the proper lever. I started it and checked the oil and it was right at the proper place. (the top notch for the 4 cyl). After a short trip of about 7 miles, I checked the oil just to make sure and it was way over the full mark. I actually had to drain about 1/3 of a quart out to get the right reading. What is happening here. Am I missing something. I don't want to blow every seal in the engine, but it looks like they would come close at least in telling you how much oil it holds. Thanks for the help.
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Old 08-05-2005, 04:45 PM   #2
Scooby Specialist
Member#: 27724
Join Date: Oct 2002
Chapter/Region: South East
Location: Raleigh, NC
1970 F100


Hot oil expands and will give a higher reading on the dipstick. Your wife's dipstick probably has a mark for full cold and one for full hot, although not all do.
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Old 08-05-2005, 05:57 PM   #3
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Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
1998 RS


the notch above the full mark is where your oil should NOT exceed when it's hot. as long as it's below that notch you're fine.
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