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Can running a 2.5l with an extra quart of oil for about 300 miles (~ 3/4 inch overfill on the stick) damage engine seals or gaskets, or will it just froth up? Here's hoping for the best -- the one thing my SE never did was leak oil. During the time the motor was overfilled, it seem to run fine, except for a momentary hiccup due to a bad plug wire.
When I was under the car today, draining out the mess, I saw there was a wet spot on the engine (passenger) side; however, that could have been spillage from the bum oil change done on Thursday. Any advice is appreciated!
M. Man
RIP '96 SE -- this car's troubles don't belong to me
'01 Eternal Blue Pearl Accord EX Manual
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Joined: Feb 2001
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That amount of extra oil shouldn't hurt anything. All it would do is slosh and froth and maybe create a little more resistance on your crank causing a small loss of horsepower. Just drain some out maybe even go lower and add up to the full point. Alot of people recommend running an extra quart during a roadcoarse race so I really don't think it would hurt. 
Chad Williams
chad5160@excite.com
'99 SVT Frost Silver #812 of 2760 Born on Jan. 12, 1999
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it has been mentioned elsewhere in this site that to much oil can cause head gasket failure. fair warning.
98 contour gl 2.5 duratec
no mods
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Get them the hell out of there! 3/4" over on the dipstick sounds like more than a quart over! And you CAN blow a gasket if you rev the engine too hard.
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Joined: Dec 2000
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You probably should not have any problems. There is a possibility, if the oil level is excessive, that the crank can whip the oil to a froth. If so, the air entrained in the oil doesn't make a good lubricant and can result in engine damage or excessive wear.
Was the oil foamed when you drained it?
Dan B.
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I recently confronted a tech at my mother's work(Plantation Ford) about the ongoing problem Ford dohc vehicles and oil starvation issue. He stated that he was aware of the problem, and recommended that I run 1/2qt. extra. He stated that it most likely would not froth due to the small amount that is constantly in the oilpan, especially at higher rpm's. Oh yeah, I trust his advice, he is quite an auto enthusiast and personally owns a twelve second Lightning
2000 SVT
silver/blue #1699 of 2150
14.793@94.88
Sho-Shop off road y-pipe for sale($75)
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To make the answer simple.
No Damage. Since none is present now and you caught the mistake.
I also think the up to .5 qt's over probably would not hurt in any event (I've run .25qts over since new - 14k miles) Especially at high rpm's like mentioned because the pump is pushing so much oil it's never pooling in the pan.
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don't oils have anti-foaming agents in them, or no?
98 contour gl 2.5 duratec
no mods
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i know we're supposed to have 5.8quarts...will putting 6 in there hurt anything?
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Originally posted by CrazyCanuck:
don't oils have anti-foaming agents in them, or no? Yes. However, no amount of "anti-foaming" additive will stop the crank from whipping the oil up if overfilled. - 6qts in fine.
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I run 6qts too. No problem and when I pull the disptick there is no evidence of foaming.
Regards, Anastazi Father of the Aussie Bar anastazi.sarigiannis@aam.com"Computer games don't affect kids. I mean if Pacman affected us as kids, we'd all run around in a darkened room, munching pills and listening to repetitive music." ----------------------------------- 2000 Silver Frost SVT #1126 of 2150 8" AFE/"Big-Mouth" Intake, Modified BAT Pipe, IAT Mod - A'PEXi S-AFC, Superchip, No Secondaries, Cobra/CSVT Hybrid MAF, Magnaflow True Duals, MYSTERY Mod, Autolite AWSF22FS's and FMS Wires, ES MM Inserts, Cross Drilled/Slotted Rotors w/ Greenstuffs, APR DTM Spoiler, Escort Cossie Vents, NACA Duct, Mirko Splitter, Koni's & H&R Springs, 24mm "Aussie" Sway Bar, 18" Enkei RS-5, 225/40R18 KDW-2's. Pioneer DEH-P7000R, TS-6975's, TS-6855's, MTX BE104, MTX Blue Thunder PRO502 http://www.geocities.com/qikslvrsvt
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I typically run 6 qts because:
1) No damage so far and
2) What the heck do I do with that extra 1/2 quart left over.
(Not like I'm going to stow it it for 6 months and then use it in another fill...)
There may be problems that present themselves if one consistently drives cajones-to-the-wall, but I drive 80 miles every business day and have had no problems other than water pump at 98,000 miles, and that was most certainly NOT due to too much oil. (Rather, it was due to the cruddy design of the WP impeller, which is plastic.)
Drive On.
Rob
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[QUOTE]Originally posted by REV VT:
[QB]I typically run 6 qts because:
1) No damage so far and
2) What the heck do I do with that extra 1/2 quart left over.
same reason. i run 6.. :rolleyes:
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Very tired!! 
2001 Cavalier
150-175 more kms
per tank of same size
Pioneer 12 CD Changer
SOLD Green 98 Mystique
GS Sport
Zetec ,ATX
885 Fogs mod.
Hi beam mod.
205 15s
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