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Synthetic and oil level reading
Since I filled my 1991, 750iL with Mobil 1, 0W-40, the low oil level
alarm has started going off when the (overnight) dipstick level is 1/4 of the way down from the high mark. I have heard that synthetic oil "clings to the surfaces", and thus takes longer time draining to the oil pan compared to conventional oil, and this seems like a confirmation of that. It probably takes 6 hours to get a repeatable oil level reading, prior to that, the level slowly increases. Has anybody else seen this, and if it is true that synthetic oil drains down slower, would the optimal oil level be higher than for conventional oil, or would the risk of overpressure exist during startup? Jan Fure |
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