10/19 TPW Check in station!!!

[Sevn86]

Originally Posted by baclarsen

You have sun???? It was sunny for about an hour but now it is clouding back up....:(

Yup it's still shining through the window...it better not rain cuz I washed my car Friday...and I need to finish painting...

[Sevn86]

O crap! It's no longer shining but it's still bright outside...

[Sevn86]

So how many miles do yall have on yalls car now? I think I have 2,156...and from now on they will start to add up quick since I will be driving to the galleria area every other day or so...

[baclarsen]

Originally Posted by Sevn86

Lucky...see I don't have time to change my own oil and nor do I have the equipment to do it myself...so I'm stuck with taking it to the dealer...And synthetic should last atleast 5-7 thousand miles between changes right? So did u notice any big difference after the oil change and how the car performes?

Maybe a little performance increase. There is much discussion on other threads on this subject. (first oil change performance increase). Some think that the computer was set to de-rate the engine until your first reset on the oil life indicator. I did notice an increase in my gas mileage on the freeway tho.
When I am going down the freeway and reset the average mpg it will now stabilize at about 28 mpg. at about 60 mph. I still only have 1550 mi. on the car so I expect that will improve at the next oil change ....

[AK Mike]

Originally Posted by Sevn86

So how many miles do yall have on yalls car now? I think I have 2,156...and from now on they will start to add up quick since I will be driving to the galleria area every other day or so...

Still have 137 on the odometer; I put it outside if I'm working in the garage on weekends...I don't expect to drive it until they get some of the gravel off the roads...probably in April or May. Then, I've got to get enough miles on it so I can change the oil before my road trip in June.

[AK Mike]

GM used to have a computer function called "block learn"...the computers could actually figure out your driving habits and adjust accordingly...they also run the car on the 'rich' side while the engine's still green; keeps 'em living longer, I'm told.

[Sevn86]

Originally Posted by AK Mike

GM used to have a computer function called "block learn"...the computers could actually figure out your driving habits and adjust accordingly...they also run the car on the 'rich' side while the engine's still green; keeps 'em living longer, I'm told.

Sorry for the stupid question but i hear people taking about running rich and stuff but what does it mean?

[Sevn86]

Originally Posted by baclarsen

Maybe a little performance increase. There is much discussion on other threads on this subject. (first oil change performance increase). Some think that the computer was set to de-rate the engine until your first reset on the oil life indicator. I did notice an increase in my gas mileage on the freeway tho.
When I am going down the freeway and reset the average mpg it will now stabilize at about 28 mpg. at about 60 mph. I still only have 1550 mi. on the car so I expect that will improve at the next oil change ....

k thats good to hear cuz my car isnt giving the best gas mileage...so hopefully that will increase after i get my oil change...

[baclarsen]

Originally Posted by Sevn86

Sorry for the stupid question but i hear people taking about running rich and stuff but what does it mean?

Running rich means the fuel/air ratio is leaning heavy to the fuel side, the result of a slightly rich mixture is a cooler running engine. Also it will slightly decrees the power output .

Originally Posted by Sevn86

k thats good to hear cuz my car isnt giving the best gas mileage...so hopefully that will increase after i get my oil change...

Have you reset your average MPG on the freeway with the cruse set to 60? The longer you can go without braking or accelerating will give you the best result.
That will give you a true highway MPG. The city mpg will vary greatly between different driving styles....

[CloudXTC]

omg how is this thread still going?! you crazy people!

[AK Mike]

My wife called from work and wanted some stuff she forgot this morning, so I had an excuse to drive the Camaro (still too many rocks on the road!) Man, this car is FUN!! Probably put another 30 miles or so on...

Sevn86:
Just to add to what Brad already said, an internal combustion engine has an ideal fuel/air ratio (14.7:1) called a stochiometric ratio. Fuel doesn't burn without being mixed with air and with carburetors, the ratio would be all over the board sometimes....racers would 'tune' their carbs for WOT (wide open throttle) and most of those cars wouldn't run very well at low/medium RPM's (plus they would use big cams that didn't help the idle quality either.) Anyway, with fuel injection and computers, engineers could control the fuel/air ratio much more precisely and keep the engine running at optimal...providing they still met all the emissions/mileage requirements! Usually, that meant the car would run toward the 'lean' side (more air/less fuel) that helped with mileage...but at the cost of burned valves/pistons and hotter engine temps. Generally speaking, the fuel/air ratio should be pretty consistent, depending on the engine load, etc. Higher altitudes require leaner mixtures (more air/less fuel) because the air density is less; a cold engine requires more fuel/less air to prevent backfires/misfires. Colder air is denser than warmer air so my Camaro will make more horsepower (sea level and cool/damp air) than somebody in the high desert on a warm day....everything else being equal, of course!

So, the engineers would typically run a green (new) engine fatter/richer (higher fuel to air ratio) to keep temps lower and allow the engine some break-in time before leaning out the mixture for best performance. I'm sure there's a 'trigger' so the computer 'knows' when to lean out the mixture; time/mileage or whatever....could be the oil change reset? Only your engineer knows for sure. Anyway, for the average owner, it really doesn't make a huge difference one way or the other, your car will likely run better 'overnight' some day because it's designed to do that! (Most people never notice the difference!)

[baclarsen]

Originally Posted by CloudXTC

omg how is this thread still going?! you crazy people!

Thanks,,, LOL

Originally Posted by AK Mike

My wife called from work and wanted some stuff she forgot this morning, so I had an excuse to drive the Camaro (still too many rocks on the road!) Man, this car is FUN!! Probably put another 30 miles or so on...

Sevn86:
Just to add to what Brad already said, an internal combustion engine has an ideal fuel/air ratio (14.7:1) called a stochiometric ratio. Fuel doesn't burn without being mixed with air and with carburetors, the ratio would be all over the board sometimes....racers would 'tune' their carbs for WOT (wide open throttle) and most of those cars wouldn't run very well at low/medium RPM's (plus they would use big cams that didn't help the idle quality either.) Anyway, with fuel injection and computers, engineers could control the fuel/air ratio much more precisely and keep the engine running at optimal...providing they still met all the emissions/mileage requirements! Usually, that meant the car would run toward the 'lean' side (more air/less fuel) that helped with mileage...but at the cost of burned valves/pistons and hotter engine temps. Generally speaking, the fuel/air ratio should be pretty consistent, depending on the engine load, etc. Higher altitudes require leaner mixtures (more air/less fuel) because the air density is less; a cold engine requires more fuel/less air to prevent backfires/misfires. Colder air is denser than warmer air so my Camaro will make more horsepower (sea level and cool/damp air) than somebody in the high desert on a warm day....everything else being equal, of course!

So, the engineers would typically run a green (new) engine fatter/richer (higher fuel to air ratio) to keep temps lower and allow the engine some break-in time before leaning out the mixture for best performance. I'm sure there's a 'trigger' so the computer 'knows' when to lean out the mixture; time/mileage or whatever....could be the oil change reset? Only your engineer knows for sure. Anyway, for the average owner, it really doesn't make a huge difference one way or the other, your car will likely run better 'overnight' some day because it's designed to do that! (Most people never notice the difference!)

Nice recall Mike, I couldn't put it so eloquently so I kept it simple.. +1

Brad

[baclarsen]

Mike, Did you work in the engineering department for GM?

[AK Mike]

Originally Posted by baclarsen

Mike, Did you work in the engineering department for GM?

Brad: I actually worked for a dealership; started out right after tech school (degree in Automotive Technology) in a little Buick/Opel/Subaru dealership in the midwest, then moved back to Alaska in '78. Started as a Journeyman Technician, then Shop Foreman, Service Manager, Training Foreman, Sales, Fleet Sales, Fleet Sales Manager and then back to Sales again. Quit the car business in 2002 and now work for Uncle Sam (DHS). I taught the stuff for years and even though I'm waaay behind the technology powercurve, I can still overhaul a Quadrajet in my sleep and set points/timing by ear within a few degrees. Comes in handy when I'm tinkering with my '51 pickup, but not much that I know applies to my 2010 Camaro....so, I picked up the Camaro5 forum 'habit' and have been soaking up what I can; just to keep my car going if nothing else. My Snap-On tools are abit dusty from lack of use, but I'll never sell them. I've got some catching up to do from the looks of things, but at least I'm not starting from scratch!