Oil Change Overfill
Oil Change Overfill !! Ok, so I wouldn't really consider myself a newbie, but I had my 6 qts of Mobil One in my car and I swung by a Valvoline to get it changed out on the way to the track. It was getting close and I figured fresh oil at the track would be nice. So, they drained it and I was shooting the **** with the manager, and I noticed they put all 6 qts in and fired it up, then shut it off and said it was way too full. Then they drained some out, but its still reading pretty high. Is it ok to have an extra 1/4 or so of a qt in there? I havn't driven it much since, and definatly not above 2 1/2k. My oil pressure seems to be a little higher. Wouldn't you know it started raining while I was in Valvoline so that plus the oil situation obviously sent me home and not out to the track.
12 Second Club
Joined: Sep 2005
Posts: 4,273
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From: Bucks County, Pa.
Originally Posted by jmm98LS1
It doesn't hurt anything to run an extra quart in there. Several guys on this board put an extra quart in every time.
Ive always heard it was really bad to have it over fiulled but there might be someting different about LS1s as im a newbie to em still. On older motors the crank would be swimming in the oil and slow ya down. Im sure its a great way to test the antifoaming capabilities of the oil though!
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TECH Senior Member
Joined: Nov 2001
Posts: 7,234
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From: Mississauga, Ontario
Originally Posted by Toxic Texan
Can we have some proof with that statement???
i have overfilled mine with 1 qt just to see if i noticed any differeance in how it runs,absolutely nothing.i tried the same thing in our 89 camaro and you know right away somethings very wrong.i started adding extra oil after going WOT on a curved entrance ramp and hearing unmistakable rod bearing knock.scared the bejesus out of me.i didn't get the noise driving straight line,only in curves.i wouldn't advise watching the oil pres gauge while WOT in a curve but thats how i realized it was starving for oil.i run 6 qts and havnt had any noise since.i add 1/2 qt when i see it shows full on the dip stick.makes oil changes easier too,just put 6 in.
TECH Addict
Joined: Nov 2005
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I'm running 6L ie 6.3 quarts or close to that... have not had any issues whatsoever in running it hard. I'm also running the longer filter for my ls1 which maybe totals 0.2 quarts more... seems safe enough to go over capacity a bit like that.
Do you guys running 6+ quarts see a difference in oil pressure compared to before? In any/all driving conditions, idling, cornering, cruise, WOT, etc?
I am running Mobil 1 5w30 and have been noticing now that it's warming up I may only have 45psi at a 60mph cruise? I know that Mobil 1 5w30 is on the lighter side for that weight oil.
I am running Mobil 1 5w30 and have been noticing now that it's warming up I may only have 45psi at a 60mph cruise? I know that Mobil 1 5w30 is on the lighter side for that weight oil.
TECH Apprentice
Joined: Dec 2004
Posts: 393
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Originally Posted by Stanger88
Still wondering about the 5.0...anyone know?
Or you could hop on over to stangnet they should know
If you need more oil capacity I know canton makes 7qt pans to fit Fox mustangs.