Date: Tue, 25 Feb 2014 23:03:43 -0600
Reply-To: Tom Hargrave <thargrav@HIWAAY.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Tom Hargrave <thargrav@HIWAAY.NET>
Subject: Re: Mann Oil Filter and lifters Was:Engine Starting Problem
In-Reply-To: <530D6A78.8010908@colorado.edu>
Content-Type: text/plain; charset="us-ascii"
Your oil pump is a constant displacement pump and it will pump the same oil
minus any that may leak back regardless of the oil thickness for a given
RPM. This is because oil is not compressible.
Thicker oil has higher viscosity and thicker oil will not bleed out of your
lifters as fast as thinner oil. Thick or thin, the same volume of oil will
pump into your oiling system at a given RPM, but thinner oil will leak back
across the pump and leak through the bearings faster than thicker oil.
You can compare at your oil system to a vey leaky bucket and your oil pump
to the faucet at the end of a hose. With your oil system, the leaks would be
all of your bearings + whatever bleeds back across your oil pump.
Turn the water up (increase your engine RPM's) and the water level
rises in the bucket (your oil pressure goes up)
Turn the water down (decrease your engine RPM) and the water level
drops in the bucket (your oil pressure goes down)
Turn the water up high enough, the water bucket over flows (your oil
system poppet valve opens and the excess is dumped back in your crank case)
Thicken the water so your leaks slow down (run higher viscosity oil)
and the water level rises in the bucket (your oil pressure goes up)
Thanks, Tom Hargrave
www.kegkits.com
www.stir-plate.com
www.towercooler.com
www.grow-sun.com
www.raspberryproject.com
Did you try to call & I did not answer? I apologize but I never answer
numbers I don't recognize because I'm tired of sales people trying to sell
me life insurance, health insurance, Obama insurance, merchant services,
very expensive money and the latest, greatest "guaranteed to make millions"
investment.
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of
Richard A Jones
Sent: Tuesday, February 25, 2014 10:16 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Mann Oil Filter and lifters Was:Engine Starting Problem
Tom Hargrave wrote:
> No brand of oil filter will fix this but thicker oil will reduce or
> eliminate the symptoms.
How does thicker oil pump up a lifter quicker in an icy cold engine?
ORR told us:
> If you Switch to a 10 or 5 or even 0W** Oil that ColdLifterSyndrome
> will most probably be diminished or may even go away completely ~
Which is it?
Richard
