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Old 09-24-2013, 08:55 PM   #12
GASoline71
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Join Date: Sep 2007
Location: Whidbey Island, Washington
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Re: recommended oil weight

The diesel oil is no longer the savior of flat tappet cams... It doesn't have high enough ZDDP in it as well. Been that way for almost 10 years. So you need to run an oil made for older rigs with flat tappet cams.

Look into Joe Gibbs Racing oil...

Or run off the shelf 10w30 with a ZDDP additive.

Gary
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My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread.

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Remember Murphys 2nd law of mechanical relationships... "OPPOSING COMPONENTS ATTEMPTING TO OCCUPY THE SAME SPACE, AT THE SAME TIME, GENERALLY END UP OCCUPYING ADJOINING SPACE AT THE BOTTOM OF THE OIL PAN"
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