5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

94 Losing Oil

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Old 01-24-2010, 04:29 PM
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Jordan's5.0
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Default 94 Losing Oil

My 94 seems to be loosing oil but there are no visible leaks in the rear main or anywhere else under the car, there is no blow by in the pcv, and it's not smoking on start-up or smoking at all it is about 3000 into the oil change, what else could it be we are talking about 3/4 quart of oil that has pretty much disappeared any thoughts??
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Old 01-24-2010, 04:36 PM
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mustangsneverdie
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how fast does it lose it?
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Old 01-24-2010, 04:52 PM
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nitrous_bob
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normal oil consumtion for a new 5.0 is 1 qt/3000 miles... so your better than new lol

it is what it is , don't sweat it
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Old 01-24-2010, 05:02 PM
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Jordan's5.0
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ok thanks just making sure cause it was fine at about 2000 miles and then it has slowly started to lose some it's between 1/2 and 3/4 a quart inbetween 2-3000 miles so just making sure it was nothing to worry about thanks!
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Old 01-24-2010, 05:19 PM
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Bubba 95SN
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Change oil and filter stop worrying. This is not a problem check consumption on next change.
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Old 01-24-2010, 05:40 PM
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mjr46
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i wouldn't be concerned with 3/4 in 3000
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Old 01-24-2010, 09:16 PM
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Jordan's5.0
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went ahead and changed it today switched from 10w40 to 20w50 figure it's about time since the car has 182,000 miles
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Old 01-24-2010, 09:24 PM
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AdderMk2
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Originally Posted by Jordan's5.0
went ahead and changed it today switched from 10w40 to 20w50 figure it's about time since the car has 182,000 miles
that was probably the dumbest thing you could have done. the car taked 10w30.. and thats what it should STILL be running
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Old 01-24-2010, 10:27 PM
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dreamer1uk
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Originally Posted by Jordan's5.0
went ahead and changed it today switched from 10w40 to 20w50 figure it's about time since the car has 182,000 miles
This almost made me spit my drink out, lol

Id change it back to 10w30. Why did you go with that thick of an oil?
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Old 01-25-2010, 04:13 AM
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nba1341
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Originally Posted by Jordan's5.0
went ahead and changed it today switched from 10w40 to 20w50 figure it's about time since the car has 182,000 miles

OH MY GOD!!!

The car takes 10w30 and if your at high mileage you should use 10w40 do not go thicker!
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