Oil level question.
Drifting
Joined: Sep 2007
Posts: 1,572
Likes: 51
From: Wichita Kansas
At full level will not harm anything, however overservice will cause problems and the most common is a blown front seal. In normal driving (and we know you don't do that...) a little under service is harmless untill serviced.
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Team Owner
Joined: Nov 2004
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From: Sorrento Italy
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Fatcat, i dont know if i got it right...you mean that in normal driving, at full level, it won't harm the engine, instead if at full revs it could blow the front seal?
Sorry, i dont get the meaning of 'service' in your sentence.
Last edited by panic; Jan 11, 2008 at 12:50 PM.
Race Director
Joined: Dec 1999
Posts: 19,610
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From: Forked River NJ
At the full level will be the recomended amount of oil in the crankcase. At the bottom of the so called full marking you are a quart low. It will not harm anything at the full level. Should be a good thing to run full level because at max rpm a lot of the oil is "upstairs" in the motor and you do not want to start sucking air.
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Team Owner
Joined: Nov 2004
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From: Sorrento Italy
I red somewhere that racers drive 'empty' cranks to get the full power potential and reduce to minimum the oil density negative inertia on the motor...
I never drove my 406 at full level, always kept it accurately a bit lower then half reading on the stick...y'day i had a full oil/filter service and wanted for the first time fill it up.. but now i'm not sure if i did the right thing...just wanted to ask opinions before i go suck a quarter back out of the crankcase.
I never drove my 406 at full level, always kept it accurately a bit lower then half reading on the stick...y'day i had a full oil/filter service and wanted for the first time fill it up.. but now i'm not sure if i did the right thing...just wanted to ask opinions before i go suck a quarter back out of the crankcase.
Race Director
Joined: Feb 2005
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Overfilling oil into your engine can cause problems too. As the crankshaft rotates it will churn the oil, causing aeration and eventually sustained foam may form. This can lead to overheated motor oil, oxidation and a loss of oil pressure. Spongy aerated oil is hard to pump. It starves the engine and critical lubricated surfaces.
Don't think I would exceed 1/4" over full mark....just to be safe...
What grade/vicosity you running ?
Rich
Don't think I would exceed 1/4" over full mark....just to be safe...
What grade/vicosity you running ?
Rich
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Race Director
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From: Forked River NJ
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Team Owner
Joined: Nov 2004
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From: Sorrento Italy
Gordon, i didnt mean dry sumps...i think there are race cars that run with the minimum oil level in their engines, to avoid the oil weight inertia (which would eat some power)
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Team Owner
Joined: Nov 2004
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From: Sorrento Italy
I've been using Motul competition 15/50 sintethic oil (last two changes) during last spring/summer period, i wanted now to get something thinner like a 5/50, more likely for cold starts, specially during winter season.
Last edited by panic; Jan 11, 2008 at 05:20 PM.
Melting Slicks
Joined: Dec 1999
Posts: 2,116
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From: Mid West
Cruise-In III Veteran
That's what an ex-corvette engineer told me at my last HPDE. He was my instructor and said that in the higher speed corners my oil pressure was going from 80+ psi down to 20 psi due to lack of oil. He had me put an extra quart of oil in to help eliminate the problem for the last couple of sessions.