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Re: recommended oil weight
Quote:
Originally Posted by marvgarr68
Use rotella or delo diesel oil or you will wipe the cam. The oil for gas engines does not have enough zddp anymore. You get 15/40 in diesel oil which is fine I only use rotella only in everything I drive including my silverado 5.3. Also the diesel oil is detergent so your motor will stay clean. I have pulled down motors with high miles after I have used rotella and they are clean inside.
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I have to agree with the rotella, I have a new crate engine, I use the 15-40w plus a Lucas break in additive after every oil change, my manufacture recommends not using a synthetic until over 7500 miles, but personally i will just stick to the rotella with an additive
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Mike
72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider.
421 SBC / TH350 3000RPM Stall
Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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