Maybe Its Aliens
Grand HDF Member
Joined: Nov 2009
Posts: 4,315
Likes: 1,663
From: Tampa
Doing this helps get what, that last 0.5% of the dirty oil out of the passages and replaces them with air? Now your pump has to move air (which it's not designed to do) until it can suck up enough new oil to begin the delivery of new oil.
SMRT...
SMRT...
Grand HDF Member
Joined: Jun 2010
Posts: 4,584
Likes: 918
From: coast to coast
Guess I've never noticed it before. Maybe it's less obvious when opening the fill spout first.
Extreme HDF Member
Joined: Aug 2007
Posts: 17,625
Likes: 1,665
From: Blairsville GA
I think this guy is opening the crankcase to drain the last little bit.
Grand HDF Member
Joined: Jun 2010
Posts: 4,584
Likes: 918
From: coast to coast
Makes sense. Just sounded more violent the way he described it.
Outstanding HDF Member
Joined: Sep 2017
Posts: 2,008
Likes: 788
From: Great State of Texas
There are things in this world some tend to take a little too serious. Draining the oil for an hour, then starting the engine with no oil to get that last little purge is one of them.
To me this is as extreme as taking advantage of the $20 nitrogen tire service the dealers run and making sure they run a vacuum on the tire before the nitrogen is pumped in the tire.
Comon Man.
To me this is as extreme as taking advantage of the $20 nitrogen tire service the dealers run and making sure they run a vacuum on the tire before the nitrogen is pumped in the tire.
Comon Man.
Extreme HDF Member
Joined: Aug 2007
Posts: 17,625
Likes: 1,665
From: Blairsville GA
There are things in this world some tend to take a little too serious. Draining the oil for an hour, then starting the engine with no oil to get that last little purge is one of them.
To me this is as extreme as taking advantage of the $20 nitrogen tire service the dealers run and making sure they run a vacuum on the tire before the nitrogen is pumped in the tire.
Comon Man.
To me this is as extreme as taking advantage of the $20 nitrogen tire service the dealers run and making sure they run a vacuum on the tire before the nitrogen is pumped in the tire.
Comon Man.
and let it run until clean oil came out.
There never was much dirty oil, and it was a great way to get oil all over the place. I don't think I'd ever drain the oil, and then let it run dry for even a few seconds. But, that's just me.
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Joe Kucinski
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
So, I assume that the air-blast came just as the last of the oil was draining?
Somethin's definitely screwy there! The MoCo's only had, what, 115 years to figure out how to vent a crankcase? Maybe another century or so will give 'em time enough to muddle through a fix! Too bad Henry Ford's not still around, since the Model A's & T's didn't have this problem. He could give 'em a hand.
Somethin's definitely screwy there! The MoCo's only had, what, 115 years to figure out how to vent a crankcase? Maybe another century or so will give 'em time enough to muddle through a fix! Too bad Henry Ford's not still around, since the Model A's & T's didn't have this problem. He could give 'em a hand.
Good thing I'm in a good mood.
Road Captain
Joined: Nov 2017
Posts: 514
Likes: 160
From: So Cal!
Make that another one. I too cringe waiting for the valvetrain of any four stroke engine to quiet down as it builds oil pressure after an oil change. But to purposely allow an engine to run with ZERO oil pressure for A MINUTE???
That is like the proverbial nails on the chalkboard to me. I would have nightmares about bearing material disentgrating and kicking a rod out of the case. Just sayin'...
That is like the proverbial nails on the chalkboard to me. I would have nightmares about bearing material disentgrating and kicking a rod out of the case. Just sayin'...