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Every Ford I own at the time (3) calls for 7500 but that’s w their synthetic blend oil. So not sure what is regular. I would not want to run any straight dino oil 7500 miles but that’s just my opinion. Dino oil breaks down w heat after a while and I wouldn’t take that chance especially since lots of my miles are in the south.
GMC, just curious what dates do u use and what oil? Thx Dennis.
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