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    When to do 1st oil Change on 6.7L ?

    I have a 2015 6.7L F350. Currently I have about 1200 miles on it. Is there break-in oil in these from the factory? Should I run it out until the truck tells me to change it (about 7000 miles). Or change it early because it's a new engine? Also I have been running T6 5W-40 in previous F350's I...
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    2 CJ4 results 4 08F350 Castrol15w40 & Amsoil 5w40

    Let me know what you think of the results below. I'm new to this stuff :) I just bought this truck this summer. It had Castrol CJ4 15w40 in it when i bought it(or so they say).....so it's the oil sampled Oct 12 with 4331 km (2707 miles) on it. It had high Al and Na. I then put in the new formula...
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    CJ-4 or CI-4 in 08 F350 with Cat/DPF removed??

    I have a 08 F350 with the Cat/DPF removed.........so I don't need to run CJ-4..........so is CI-4 a better oil to go with?? Or isn't their much difference?? Thanks.
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