Oil will expand in volume when hot. So checking a hot engine is fine, as long as you realize the level will be higher than your "normal". Therefore, checking first thing before your normal day is the best time to check it.
Does this look okay to you? Cummins ISB 6.7 oil level?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Regen Again?, Dec 20, 2018.
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