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Alright fellas I’m ready for some opinions. ( I expect a lot) what oil/coolant do you guys like to run in your 6.4? I’m about to buy one this weekend and that’s the first thing I’ll do. It is deleted if that makes a difference. I feel like when it’s deleted most people think synthetic is best? Maybe rottela T6? For coolant I think I’ve seen people say the gold?
Okay, I have been using the Motorcraft Gold coolant. I had my truck in the shop to replace the compressor and he noticed that the coolant level was low, so he topped it off with the "universal" coolant, which almost looks like the green stuff. What can happen? do I need to flush my system? He just filled the overflow bottle to the full mark.
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