Oil Pump
I have heard the same, Im thinking incorrect baffling for a particular situation
If you have a standard volume pump and the pan doesn’t get sucked dry (that only happens for two reasons and one is it’s low on pool) and then you install a HV pump it still won’t suck the pan dry. It can’t.
It can’t because the total flow volume of oil through the engine is the total of ALL the oil leaks. That’s it. The HV pump will just open the bypass sooner. It will not increase the total flow through the engine UNLESS the standard pump is so small it never opens the bypass. But it still can’t suck the pan dry.
One reason people claim the pan got sucked dry is because they get low on oil. They are 4 quart pans. One quart in each head, one quart in the rest of the system (I’m not counting the filter or oil in it) and what is running down to the pan.
Get a quart low and bad **** happens. But that’s not the pan or the pumps fault.
The other thing that happens is people who refuse to read the factory service manual take this stuff apart and then read magazines and now the web and YouTube and the pick up is installed wrong.
On a factory pan, with a factory pickup the pickup needs to touch the floor of the pan. You shouldn’t have to screw the pan down with the bolts using a 3/4 drive impact, but it MUST touch the pan. If it doesn’t touch the pan, you will “suck” the pan dry very quickly.
