Welcome a new member of the family: Balto!

[MP81]

Yeah - and I figured that I'd leave it at home this weekend, so hopefully it doesn't turn into a $500 noise...

[MP81]

Figured that with the downtime, I'd go ahead and take the supercharger back off (since I have to) and do the last easy oil change I can...

Had 7548 miles since my last oil change, and the DIC read 9% oil life remaining.

Also painted the other side of the throttle body, since it's been over 7 days since the initial painting - and I forgot to do what I thought was the bottom, or wouldn't be seen - and it was...

Ahh...new and old oil filter cartridges...


Superchargerless...again...


Where the oil filter goes, for those not familiar with Cobalts/Ecotecs:


Shit laying around:


Mobil 1 5W-30 Full Synthetic:


The old Mobil 1 Full Synthetic after 7550 miles:


Made a little mess, nothing too bad:


Random shot:

[Lucky SOB]

7500 miles?!?! wow. No thank you. Haha

[MP81]

That's why I <3 Synthetic!

[ITSSLOW]

GM doesn't have a sensor for the oil itself. The oil life is measured by idle time, throttle position, # of start ups, and a few other variables. Its then put into a formula and they come up with a %. I think its the dumbest thing GM could of done. We'd have people coming into my work with 10k+ miles on a single oil change with conventional oil. A buddy of mine works at a GM/Pontiac dealer and said they've had several cars come in with blown engines and the people say "Well, it said I still had 28% of oil life left. I thought it was weird that I could go 8,000 miles too!" I'll stick to my 3,000mi synthetic oil changes thank you!

[Boost Addict]

That looks like it's going to be a ***** to change oil with the supercharger on.

[meissen]

I've put like 6g on the Trailblazer with no oil change yet - owners manual says it will light when it's time to change the oil.

So do you have to remove the supercharger in the future when you do an oil change?

[ITSSLOW]

I've put like 6g on the Trailblazer with no oil change yet - owners manual says it will light when it's time to change the oil.

Once again, the light/oil life % are based off a calculation, not a sensor that directly contacts and measures the contents of the oil. If I was you I'd change that oil ASAP! In theory, GM had a good idea but the constants in the formula are way off if you can get 5-10k on an oil change of constant city driving. 5k with 90% highway isn't that big of a deal IMO, but we'd have people come in with 10K+ on an oil change driving nothing but short trips to and from town on dirt, country, roads. The oil would come out a pure black like diesel oil or the stuff you pull out of your lawn mower after forgetting to change it for 8 summers!

[MP81]

I only let it go this long, because I wanted it to coincide with the supercharger swap. I'll probably change it around 20%, which is between 5 and 6,000 miles. Synthetic can handle way more than that...

And no, the supercharger can remain on for future oil changes - but it's certainly not easy. You put the 1 1/4" socket on the oil filter nut, then use a nice variety of extensions to get to your socket up top, and then it'll come off just fine. I just figures, since the supercharger is coming off again - might as well change the oil once it's removed.

[meissen]

Once again, the light/oil life % are based off a calculation, not a sensor that directly contacts and measures the contents of the oil. If I was you I'd change that oil ASAP! In theory, GM had a good idea but the constants in the formula are way off if you can get 5-10k on an oil change of constant city driving. 5k with 90% highway isn't that big of a deal IMO, but we'd have people come in with 10K+ on an oil change driving nothing but short trips to and from town on dirt, country, roads. The oil would come out a pure black like diesel oil or the stuff you pull out of your lawn mower after forgetting to change it for 8 summers!

At the same time - I'm following my owner's manual so if anything were to go wrong with the engine... it's their own damn fault!

[TSTONE]

At the same time - I'm following my owner's manual so if anything were to go wrong with the engine... it's their own damn fault!

Be sure not to miss the part in the owners manual that tells you that you're responsible for checking and topping off the oil as necessary. 1qt usage(loss) per 3000 miles is acceptable under GM std's.

On the wife's Trailblazer we change it every 7K so as to stay on top of tire rotations, but it is a lease vehicle that I have no intention of buying. My OWNED vehicles always get LOF's every 3k. Which is what I tell my customers when asked about LOF's.

[WMCC Gary]

At the same time - I'm following my owner's manual so if anything were to go wrong with the engine... it's their own damn fault!

That may be true but as soon as the warranty is up its your problem.

[MP81]

Well, lets see here...

I'm really hoping that the problem is the coupler...it didn't really seem loose, but who knows...

The oil that came out from the drain plug:



...and the rest that came out when I popped the snout off...


Rotor Side:


Snout with old Coupler:


I'd say there was about 6oz of oil in there, when you include all the shit that was in the "gear box" and the snout... I'm putting all 6oz in. If I didn't pull the snout off, I'd only do the 3.4


Dirty...Does this look normal?




New and old:


Cleaned the housing:



Hopefully this stops the rattling...

[bigjon88]

man i hope everything is ok

[MP81]

It seemed to be at least a little quieter than what I remember when turning it by hand, but it could just be my mind playing tricks on me.

We'll see tomorrow...