Pete- Modern multiweight oils are made to work backwards from conventional wisdom...heat makes a higher viscosity, cold makes a lower viscosity. Even though it doesn't make sense, you need more viscosity at higher temps for more protection and lower viscosity at cold temps for easier starting and faster lubing of engine parts. More $.02 Chris in NC
From: Pete Scheer <plsc-@tycoelectronics.com> Reply-To: Loopfram-@topica.com To: "'Loopfram-@topica.com'" <Loopfram-@topica.com> Subject: RE: Oil pressure Date: Mon, 9 Jul 2001 09:52:41 -0400
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ED,
I haven't had the same experience but, I did have a pressure gage in an old Chevy years ago and I did see a big drop in pressure at idle after running pretty hard.
Seems the heat will lower the viscosity and then that plus the low rpm will give you a low pressure reading.
I'd say if you fire it up next time and the light goes out as normal you are OK. Good Luck Pete
-----Original Message----- From: Martin Cooke [mailto:cook-@virgin.net] Sent: Thursday, July 05, 2001 11:34 AM To: Loopfram-@topica.com Subject: Re: Oil pressure
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Probably the pressure sender. They're rubbish!
cookie
----- Original Message ----- From: Ian Adkins <adk-@gte.net> To: <Loopfram-@topica.com> Sent: Thursday, July 05, 2001 5:12 AM Subject: Re: Oil pressure
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Hi Ed,
Doesn't the oil pressure light cone on when the pressure in the case
drops?
I'm not sure why the light would go on if it was hot.
Question. Would the idle light go off when you raise the rpm of the bike slightly...as like the generator light would come on a low rpm and then
go
off as you raised the rpm?
If I was you I would check this out before going too much further. My
bet is
that the problem could be in the idiot light but to be on the safe side
I
would make sure that the bike has the right amount of oil in the case
and be
sure that your oil pump is working. I have heard of people that had the
oil
channels get blocked only to loose their top end.
Let us know what you find out...Ian
-----Original Message----- From: eddy-@trvnet.net <eddy-@trvnet.net> To: Loopfram-@topica.com <Loopfram-@topica.com> Date: July 4, 2001 11:34 AM Subject: Oil pressure
Hi all. I'm pretty new here so please bare with me if I'm asking questions that have been discussed recently. I'm running 20W-50 Castrol in my '73 Eldo. I was riding about 70+ down the highway yesterday in nearly 90 temp. When I got home and idled the bike down (idle is set pretty low) the oil pressure light would come on. Is this normal for a well used bike? This is the first time the oil pressure light has come on while running, I'm sure it's the hottest/hardest I've run the
engine.
Thanks in advance. Ed Dyvig.
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