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Spinning the engine via the starter motor avoids turbo spool-up because there is no combustion. Furthermore, the absence of a combustion cycle greatly minimizes the load on the crank and rod bearingsThe engine doesn't differentiate between the starter rotating the oil pump, or the combustion cycle.
Crank, rod, cam, turbo bearings.. none of that is dry after an oil change.Spinning the engine via the starter motor avoids turbo spool-up because there is no combustion. Furthermore, the absence of a combustion cycle greatly minimizes the load on the crank and rod bearings
After an oil change the filter is empty and it takes a few extra seconds to fill with oil before pressure can build; over on BITOG some folks logged their oil pressure readouts on startups and there is a noticeable delay in time to get to full oil pressure between a normal start and an empty filter. I think there was also an LSJr video on the topic with some pressure traces too.Crank, rod, cam, turbo bearings.. none of that is dry after an oil change.
Simply starting the engine after an oil change is absolutely no different than cold starting it in the morning after the engine has been off for hours.
Do people that use this also “prime” their engine every morning? I’m honestly curious.
Just starting the engine will build not only more oil pressure, but also much quicker than clear flood mode.
If there was any validity that this somehow helped or caused less damage, it wouldn’t be called clear flood mode. It would be called engine oil prime mode or something, but that’s not what it was programmed for.
There’s still residual oil on everything. Whether the filter is dry or not.After an oil change the filter is empty and it takes a few extra seconds to fill with oil before pressure can build; over on BITOG some folks logged their oil pressure readouts on startups and there is a noticeable delay in time to get to full oil pressure between a normal start and an empty filter. I think there was also an LSJr video on the topic with some pressure traces too.
Probably not going to hurt anything if you don't use it, but I would for peace of mind.
Indeed. Better advice would be to let the engine 'rest' for about 30 seconds before shutting it off if you've been running it hard or it's particularly hot out, to cycle cooler oil into the turbo and prevent coking.This is completely unnecessary for oil changes. But if it makes people feel all warm and fuzzy doing it, more power to you![]()
No, no, no! This priming idea is totally legit. Everyday I do this as I prepare to go to work in my 1918 Model T (its black and the T stands for turbo). I expect to get another hundred years out of this baby!There’s still residual oil on everything. Whether the filter is dry or not.
There’s probably millions of oil changes done every day without “priming” the oil and yet never any issues, that’s all I’m saying.