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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.

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Old 04-22-2014, 01:31 AM   #11
95greengt
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Hack ... I use conventional oil now. I have heard in the past that you should not switch a motor over to synthetic after it has been ran for a while with conventional. Why is it that the synthetic would cause it to not smoke?
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Old 04-23-2014, 01:39 AM   #12
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Rule of thumb........
When checking compression all the cylinders should be within 10% of each other.
That applies to everything BTW.....
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Old 04-24-2014, 02:50 PM   #13
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that is a bunch of bull. you can run synthetic at any time. when the car hasnt been taken care of it can cause the engine to leak by breaking down the sludge in the engine that car blocking up leaks. other than that your engine will never know the difference if you run synthetic or conventional. and you can switch back to conventional
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Old 04-25-2014, 04:53 AM   #14
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Quote:
Originally Posted by HACKGT350 View Post
that is a bunch of bull. you can run synthetic at any time. when the car hasnt been taken care of it can cause the engine to leak by breaking down the sludge in the engine that car blocking up leaks. other than that your engine will never know the difference if you run synthetic or conventional. and you can switch back to conventional
May be something i look into then... Thanks Hack
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Old 04-25-2014, 04:53 AM
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