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Old 09-12-2019, 08:43 AM   #13
bigmac73
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Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,216
Re: Oil confusion, please help!

Quote:
Originally Posted by garyd1961 View Post
Rotella took the zinc out a few years ago.
That is not good.... do u have some documentation to support ? I might have to swap to royal purple
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72 C-10 Cheyenne PS/PB/Tilt/Tach/Rear slider/
385HP/405TQ Vortec 355 /TH350 2200RPM Stall
MSD Ignition/Holley 650 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks
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