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FA-4, yay or nay?
I'm using Rotella T4 10W-30 (non-synthetic) at the moment, mainly because I couldn't find any T6 5W-40 or even T5 10W-30 at the time of the last oil change. I will likely go back to either T6 5w-40 (full synthetic) or T5 10W-30 (synthetic blend) at the next oil change.- 21Tradesman3500
- Post #32
- Forum: 2019-2024 6.7 Cummins I6 Turbo Diesel