4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Why is it Bad??

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Old 11-22-2007, 08:41 PM
  #11  
oxfordgt
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Default RE: Why is it Bad??

I only run dino oil only because my car sits for a year every other year. Last time I deployed I had royal purple in it. When I came home all the valve seals were dry rotted which lead to the destruction of my engine. Synthetic oil sticks great to metal and makes for better startups but it don't stick worth a **** to seals.
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Old 11-22-2007, 11:35 PM
  #12  
timeformiller44
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Default RE: Why is it Bad??

i ran synthetic oil since i bought the car....let it sit over the winter ohh 6months roughly....had transmission out getting fixed....did not run once for six months....went to start up....started up...no leaks to this day....so i think that your seals will be fine bc nothing of mine leak still dry as a bone with 70k on it...
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Old 11-22-2007, 11:38 PM
  #13  
oxfordgt
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Default RE: Why is it Bad??

6 months is alot different then 15
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Old 11-23-2007, 01:05 AM
  #14  
2000GT4.6
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Default RE: Why is it Bad??

ORIGINAL: oxfordgt

I only run dino oil only because my car sits for a year every other year. Last time I deployed I had royal purple in it. When I came home all the valve seals were dry rotted which lead to the destruction of my engine. Synthetic oil sticks great to metal and makes for better startups but it don't stick worth a **** to seals.
you run this risk if you leave it sit that long without a startup no matter what oil you use... you should have someone start the car say once a month to keep it all fresh.
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Old 11-23-2007, 05:49 PM
  #15  
boostanggt
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Default RE: Why is it Bad??

and make sure youarent switching back and forth from synthetic to conventional... they dont mix well or youwill need a flush to do so. just run royal purple. it's worth it
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Old 11-24-2007, 08:46 PM
  #16  
Nelson21
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Default RE: Why is it Bad??

ORIGINAL: boostanggt

and make sure youarent switching back and forth from synthetic to conventional... they dont mix well or youwill need a flush to do so. just run royal purple. it's worth it
+1
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