It really depends on the type of oak, for example,some red oak needs to dry 6 months or more as where an old white oak may be ready in less then half that time. The water content determines the temp and rate of burn but IMO its more about the smell and flavor. Down here in the south our red oak is very strong and bitter until fully dried. I guess short answer would be the stronger the swell the longer it needs to season...
OTG 26.75, Smoker Dave Reverse Flow Trailer, CB Commercial Gasser.