05-02-2018, 10:13 AM
General rule/theory;
As the oil pan is mostly flat at its bottom, oil, dirt, metal filing drain out better and faster due to thin oil.
If cold/thick oil, some of above particles may stay trapped with oil on flat (no flow) oil pan surface.
The best: drain it hot, leave it for some time or overnight, then install back drain plug/washer.
You will drain a bit more oil when hot, not cold.
pb
As the oil pan is mostly flat at its bottom, oil, dirt, metal filing drain out better and faster due to thin oil.
If cold/thick oil, some of above particles may stay trapped with oil on flat (no flow) oil pan surface.
The best: drain it hot, leave it for some time or overnight, then install back drain plug/washer.
You will drain a bit more oil when hot, not cold.
pb