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Old 09-12-2019, 12:54 PM   #14
GASoline71
"I ain't nobody, dork."
 
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Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,762
Re: Oil confusion, please help!

Quote:
Originally Posted by Furno68C20 View Post
Good Info AussieinNC. What do I do from here? Keep running with zinc oil and hope it last, or suck it up and do a rebuild?
If there is metal embedded in the bearings, it will eventually eat the journals of the crankshaft and cause catastrophic failure. I learned this the hard way about 10 years ago.

Quote:
Originally Posted by bigmac73 View Post
That is not good.... do u have some documentation to support ? I might have to swap to royal purple
I don't have documentation per se', but if you do a Google search for Rotella, you'll see that all "diesel" oils have had their zinc and phsphorus either almost eliminated or greatly reduced from twhat they were 10 years ago.

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

The Rebuild of Creeping Death after the wreck

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I would never rebuild a 305.
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Originally Posted by prostreetC-10 View Post
I love using vacuum gauges as part of the carb tuning process. I hook the gauge to the inside of my garbage can and leave it there.
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Originally Posted by Marv D View Post
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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