Interesting topic this one,
I'm a hot oil checker, pull into the station after a drive where the oil will be up to temp, fill her up by the time I have pumped 80 ish liters I feel that's plenty of time on a hot engine for the oil to drain back to the pan.
Then I pull the dipstick, on the S8 I have found there's no difference from straight pulled reading and wiping and re dipping so just pull and look these days.
Reason for the hot check imo versus cold is the engine is going to be hot, oil expands a little due to heat, increased volume reduces the air volume in the crankcase and possibly creating more oil vapor to be ingested during combustion cycle and we have all heard of the carbon build up in the fsi engines so would like not to make matters worse.
I know its only a little bit extra when hot but the little drop when cold will make no difference to the engine.
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