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Old Nov 19, 2010 | 11:13 PM
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Prolong treatment

how much prolong oil treatment does a 1999 7.3 powerstroke take? the bottle says it only treats 4-5 quarts.
 
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Old Nov 19, 2010 | 11:41 PM
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Any kind of oil additives is a "NO-NO" for our trucks, especially our injectors, oil additives can ruin injectors I believe. Just a good ole fashion oil change with the proper rated oil and filter for diesel and change it accordingly.
 
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Old Nov 19, 2010 | 11:52 PM
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Here's an interesting set of facts about Prolong.
Prolong Super Lubricants, Inc.

And some more info about after-market oil additives in general.
http://www.epinions.com/content_2969477252
 
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Old Nov 20, 2010 | 01:17 AM
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what would be the best type of oil to use?
 
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Old Nov 20, 2010 | 06:42 AM
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Many here are fans of Shell Rotella 5W40 Full Synthetic (that is readily available, along with the popular Motorcraft FL-1995 filter)
 
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Old Nov 20, 2010 | 06:55 AM
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Lucas is also a no-no. Just good old Rotella syn for me.
 
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Old Nov 20, 2010 | 08:40 AM
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Originally Posted by diesel16
what would be the best type of oil to use?
There are two active threads right now within the first two pages of this forum on the subject of oil. Don't use any additives, just use oil.
 
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Old Nov 21, 2010 | 01:54 AM
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Originally Posted by Supercab
Many here are fans of Shell Rotella 5W40 Full Synthetic (that is readily available, along with the popular Motorcraft FL-1995 filter)
These you can get at your local Wal-Mart diesel16. Just using Supercabs quote so you know..
 
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