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Old Jul 8, 2010 | 11:27 AM
  #21  
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Originally Posted by turtlevette
tell me if i'm full of crap but i always thought you could blow out or at least weaken the rear main seal with an overfull crankcase.

seems over the years mine have started dripping after getting too full.
Why would some extra oil cause that to happen?

I'm thinking you're full of crap.
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Old Jul 8, 2010 | 11:30 AM
  #22  
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[QUOTE=lars;1574627352
The amount of bull posted here simply amazes me on occasion.

Lars[/QUOTE]







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Old Jul 8, 2010 | 12:10 PM
  #23  
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Originally Posted by bashcraft
You didn't tell us that.
Sorry about that....
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Old Jul 8, 2010 | 12:33 PM
  #24  
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Originally Posted by 7T1vette
How many times have I heard you guys state that "if you don't have anything useful to say on a thread, why not just 'pass' on it". You should take your own advice.

The guy said his crankcase was overfilled by "at least a quart" and asked if it could cause a problem. I guess you fellas would just say "No" and leave it at that.
"if you don't have anything useful to say on a thread, why not just pass it on ?"

That's what I am doing, 38 years of high performance muscle car motors to daily drivers and what I told him is not to worry about over filling a truck motor 1 qt or slightly more, 2 qts drain some out and if he had of said a 2 liter girly boy car that takes 3 qts to fill I probably would have told him to drain a quart. Actually the easiest answer would have been just drain a quart, but maybe he was running it for while before he found out and wanted to know if he damaged his motor.

My 427ci takes 6 plus the filter, and the filter on mine is small but I put 7 qts total, no way does my filter take much more than 1/3 of qt and I run a windage tray. Didn't even give it a second thought and I could have bought a half decent C5 for what I invested in that motor. So yeah I got something useful to say

It's a big internet and if you can prove me wrong ( I don't mean 1 guys opinion in the Smokey Mountains ) good hunting to you and I will apologize to you and Eddie for giving incorrect advice

Last edited by MotorHead; Jul 8, 2010 at 01:08 PM.
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Old Jul 8, 2010 | 02:46 PM
  #25  
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Originally Posted by turtlevette
tell me if i'm full of crap but i always thought you could blow out or at least weaken the rear main seal with an overfull crankcase.

seems over the years mine have started dripping after getting too full.
nope.....
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Old Jul 8, 2010 | 02:53 PM
  #26  
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My high school auto class teacher told us if you put extra oil in the pressure will go sky high and blow out the seals.

He also told us the correct RPM to shift is where the horsepower and torque curves cross.

I live by these words of wisdom.



(Hope this was useful to the thread!)
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Old Jul 8, 2010 | 02:58 PM
  #27  
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I'm scared to wade in here, but experience sometimes counts. I've always run my engine 1 quart over the full mark. My oil control problems come from too much blow bye but not from being 1 quart over. There is a quart in your valve covers, intake valley, and oil passages when the engine is running. Just my humble opinion, and I've already been wrong three times this morning, so I could be wrong.
Bee Jay
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Old Jul 8, 2010 | 03:35 PM
  #28  
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Originally Posted by Steve439
My high school auto class teacher told us if you put extra oil in the pressure will go sky high and blow out the seals.

He also told us the correct RPM to shift is where the horsepower and torque curves cross.

I live by these words of wisdom.



(Hope this was useful to the thread!)
Wow show me some documentation that backs that up or I will tell you your high school teacher is an idiot, actually worse than that they can be dangerous

Some guys have literally a house mortgage invested in their motors and if you post something to try and help make sure it is the correct information.

Not something you heard or read in HotRod magazine or my brother's uncle said this or that. A guy well known on here made a statement he is tired of BS an will start calling people out, I happen to agree with him and will be right there beside him
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Old Jul 8, 2010 | 04:12 PM
  #29  
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Originally Posted by Steve439
My high school auto class teacher told us if you put extra oil in the pressure will go sky high and blow out the seals.

He also told us the correct RPM to shift is where the horsepower and torque curves cross.

I live by these words of wisdom.



(Hope this was useful to the thread!)
if you want to live by those words it's up to you....wisdom?....not even close.....
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Old Jul 8, 2010 | 05:18 PM
  #30  
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Originally Posted by midyearvette
if you want to live by those words it's up to you....wisdom?....not even close.....
I have to admit I think my HS teacher also said this but it could have been said about automatic transmissions.
Its possible it was a general scare tactic to keep a person from overfilling anything.
Not sure why we are arguing over this , its too easy to get right.
How about we argue about something more important like ....... ummm... hey I got it ,lets argue about thermostats !!!!
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Old Jul 8, 2010 | 05:34 PM
  #31  
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Originally Posted by ...Roger...
I have to admit I think my HS teacher also said this but it could have been said about automatic transmissions.
Its possible it was a general scare tactic to keep a person from overfilling anything.
Not sure why we are arguing over this , its too easy to get right.
How about we argue about something more important like ....... ummm... hey I got it ,lets argue about thermostats !!!!
okay..okay...my thermostat is prettier than yours.....
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Old Jul 8, 2010 | 05:47 PM
  #32  
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Originally Posted by Eddie 70
Not exactly corvette related but can be if you want to go there. How much would you expect too much oil level to affect gas mileage. I bought a newer truck this weekend. This afternoon, after the truck had sat in the driveway for a couple of hours I checked the oil level. It appears to be at least a quart or more over the full mark.

Anyone experience loss of MPG because of too much oil? How much did it affect your mileage? 1 MPG, 2 MPG?

I have probably been slinging oil all over the inside of the block by the crank weights unnecessarily and have been hurting the MPG.


Thoughts, rambles, any input appreciated.

I asked for it and I got it!! The reason I asked the question is I bought this 2007 GMC Sierra with the 5.3, same as my buddies truck. His gets 20 MPG all the time. In mine, the first trip to work, I managed to get 14.4 MPG. The truck seemed to run fine the whole trip. It was an 80 mile ride one way on the interstate at 73 MPH. I am just trying to find a reason for the dismal mileage and thought there would be some good input.

BTW, it is my intentions to get the oil out of the truck this evening and get it back to the correct level.
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Old Jul 8, 2010 | 07:57 PM
  #33  
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Originally Posted by Eddie 70
I asked for it and I got it!! The reason I asked the question is I bought this 2007 GMC Sierra with the 5.3, same as my buddies truck. His gets 20 MPG all the time. In mine, the first trip to work, I managed to get 14.4 MPG. The truck seemed to run fine the whole trip. It was an 80 mile ride one way on the interstate at 73 MPH. I am just trying to find a reason for the dismal mileage and thought there would be some good input.

BTW, it is my intentions to get the oil out of the truck this evening and get it back to the correct level.
Did you have the shifter in OD or D?
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Old Jul 8, 2010 | 08:25 PM
  #34  
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Originally Posted by 74 vert
Did you have the shifter in OD or D?
For the life of me I think it was in OD everytime!! Next time I drive I will check it.

It was almost a quart too much when I got all of the oil out. I am about 95% sure that did not cause a drop in mileage like that.
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Old Jul 8, 2010 | 09:09 PM
  #35  
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Originally Posted by ...Roger...
I have to admit I think my HS teacher also said this but it could have been said about automatic transmissions.
Its possible it was a general scare tactic to keep a person from overfilling anything.
Not sure why we are arguing over this , its too easy to get right.
How about we argue about something more important like ....... ummm... hey I got it ,lets argue about thermostats !!!!
Titanium rotors, electric water pumps, serpentine belts, all provoke heated conversations here. Oh and large wheels and tires. And you gotta have backpressure in your exhaust to get decent torque.
Bee Jay
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Old Jul 8, 2010 | 09:11 PM
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Originally Posted by Eddie 70
I asked for it and I got it!! The reason I asked the question is I bought this 2007 GMC Sierra with the 5.3, same as my buddies truck. His gets 20 MPG all the time. In mine, the first trip to work, I managed to get 14.4 MPG. The truck seemed to run fine the whole trip. It was an 80 mile ride one way on the interstate at 73 MPH. I am just trying to find a reason for the dismal mileage and thought there would be some good input.

BTW, it is my intentions to get the oil out of the truck this evening and get it back to the correct level.
It's a great day when I get 15mpg from my GMC Sierra. And I have K&N Cold Air Pack, Flowmaster exhaust, and a Wester's Garage Computer.
Bee Jay
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Old Jul 8, 2010 | 10:42 PM
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Originally Posted by Bee Jay
It's a great day when I get 15mpg from my GMC Sierra. And I have K&N Cold Air Pack, Flowmaster exhaust, and a Wester's Garage Computer.
Bee Jay
And he's not sure if he had it OD or 3rd, oh well the forum, besides helping me out more than I can tell you, has kept me entertained for a decade, you can't beat that at any price
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Old Jul 8, 2010 | 10:53 PM
  #38  
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Originally Posted by MotorHead
And he's not sure if he had it OD or 3rd, oh well the forum, besides helping me out more than I can tell you, has kept me entertained for a decade, you can't beat that at any price
Wayne, after all these years, I would think you would have some kind of feel for some of the guys that have been here. That statement about me not knowing if I were in OD or not was a joke. One of my buddies posted it, I just helped it along, even added a smilie so no one would mistake it as serious.
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Old Jul 8, 2010 | 11:36 PM
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Originally Posted by Eddie 70
Wayne, after all these years, I would think you would have some kind of feel for some of the guys that have been here. That statement about me not knowing if I were in OD or not was a joke. One of my buddies posted it, I just helped it along, even added a smilie so no one would mistake it as serious.
Eddie, myself and another CF veteran have taken all we cans stand about some posting what they think or heard from a 3rd uncle. I for one am going to wave the when I see it.

The main reason is there is allot of money tied up in our rides. If you don't know and post something you could cost someone a few grand and "who cares ? " they are still sitting in front of their computers and it didn't cost them a cent for the mis-information.

I would apprecate if you didn't know for a fact what you where positing was 100% accurate at least say " I think" or I heard " before posting something that could potentially cost someone some hard earned bucks
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Old Jul 8, 2010 | 11:39 PM
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Forgot to mention please post your MPG after you drain a quart
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