Lubrication

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Edor Avura Participant Join Date: Aug 2009 Location: Nigeria Posts: 4	Lubrication 09/28/2009 12:52 PM
	Oil is suppose to prevent or reduce engine temperature but why is is that excess of it raises the engin temperature why?
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#1 Re: Lubrication 09/28/2009 1:15 PM
	Not heard about it raising temp, however you will likely blow some seals if you overfill it. __________________ Don't believe everything you read on the Internet!
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Edor Avura Participant Join Date: Aug 2009 Location: Nigeria Posts: 4	#3 In reply to #1 Re: Lubrication 09/28/2009 6:23 PM
	What about grease, can excess of it lead to elevated temperature? Thank you. Edor
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RVZ717 Guru Join Date: Oct 2008 Location: City of Roses. Posts: 2056 Good Answers: 101	#4 In reply to #3 Re: Lubrication 09/28/2009 6:38 PM
	I would have to assume that would be completely application dependant. __________________ Don't believe everything you read on the Internet!
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Anonymous Poster	#7 In reply to #3 Re: Lubrication 10/30/2009 3:52 AM
	Yes - probably more rolling element bearings are damaged by over greasing than any other cause. A motor deep groove bearing temperature rises about 30 degC during the regreasing process and substantially more if over greased.
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taejonkwando Power-User Join Date: Dec 2006 Posts: 441 Good Answers: 20	#2 Re: Lubrication 09/28/2009 2:52 PM
	Hi Edor. Oil is viscous and is designed to coat engine components long enough to remove heat and reduce friction. However this process requires power and that consumption of power produces heat. Oil levels are designed to provide an adequate reservoir to allow some losses to consumption and seepage. Overfilling a reservoir may cause the oil levels to interfere with the rotating components of the engine. More power must be produced to 'churn' this oil causing the engine to produce more heat. __________________ intellectuals solve problems, geniuses prevent them ~ Einstein
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bhrescobar Guru Join Date: Jan 2007 Location: Porto Alegre - RS - Brazil 30deg01'39.73"S 51deg13'43.45"W Posts: 831 Good Answers: 28	#5 In reply to #2 Re: Lubrication 09/28/2009 7:54 PM
	In addition, depending on the model of the engine, excess oil level can lead to foam due to interference to moving parts, failure in flow and sometimes in lack of oil pump feeding. __________________ Humm... suspicious you are...
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#6 In reply to #5 Re: Lubrication 09/28/2009 8:42 PM
	Yes! Air is an insulator, compared to liquid oil. Tiny bubbles introduced by the crankshaft churning the oil into foam, as bhrescobar described, will decrease heat transfer into the oil and decrease lubricating efficiency of the oil, as well.
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Anonymous Poster (1); bhrescobar (1); Edor Avura (1); lyn (1); RVZ717 (2); taejonkwando (1)

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