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Old 09-11-2019, 03:44 PM   #6
bigmac73
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Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,211
Re: Oil confusion, please help!

for my flat tappet cammed engine I run Rotella conventional 10-30w
always hear it still had a zinc content .But I do not know for sure just never had any issues
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Mike
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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