The car is at 75k miles and I changed from castrol synthetic gtx to castrol high mileage. 5w30 is the weight since thats what 04+ calls for put problem is as soon as I started the car up with the new high mileage I have the worst ticking/chattering noise I have ever heard. But im not getting any KR from it.

Any ideas?

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

Why the type of oil change over?

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2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

Figured id go to high mileage since I was getting up there... Thinking about going back to seee if it stops.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

When I ran high mileage oil I got nastier lifter noise and my engine leaked like a sieve. Switch back.

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[url=http://www.xboxlc.com/profile/austin0150]

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Once you go synthetic you're not supposed to switch back! I'd drain it now and go back to synthetic. Mobil 1 has a high mileage synthetic I've heard good things about. Then again I used normal Mobil 1 synth in my GTP from 110K to 165K miles and it was great.

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

True that. Sorry Derek. Jaclyn's car has had Mobil one since day one and I haven't had any valve chatter (then again it's an unmodded and not boosted haha). I know the VR guys get a ton of valve/lifter noise in the summer time and they just put some oil stabilizer in it and the problem goes away. Not that I'm a fan of any sort of a product just wanted to through that out there.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

Ill switch back and see. Btw switching back from syn being bad is a wives tale :p

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

I've both ways, but it seems like switching to dino from syn irritated your car a bit

BTW are you busy with school or what? You're never trolling the GPONA as much as you used to. I miss your sweet text, flowing across my screen like a river flowing forth from...oh wait. this is getting weird, isn't it?

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Is this really Kyle or did Pat jack your account?

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3.5" MPS, 1.84 Rockers, 3" DP, Frt PEM, 39lb Injs., PowrTuner, Wizair
14.07@ 98.85mph 2.180 60'

hahaha Pat's just getting really good at typing

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

^^Clever comeback.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

Im gonna switch back to synthetic once i have money for oil lol. And yea school has been keeping me busy. Actually did a complete teardown on a series 1 3800

just fyi this is the sound, its an mp4

http://gpdiy.org/files/VID_20101219_171945.mp4

Also on the way home it changed... Now it seems to be coming from just the rear as far as I can tell.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

You positive it is not a loose rocker arm? I know you have had it all apart.

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04 GTT - Retired
Best ET 13.016
Best Trap 115.56 MPH

Thats what I thought but I checked the rear where it sounds like its coming from and nothing.

Sadly I cant take the time to tear it down further till x-mas break starts since I still have school till thursday and work.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

Sorry did you say you were gonna tear it down and rebuild it with a I/C in there too?

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

I want to so bad, I found a S2 with everything for $800

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

I'm not so sure about that - I would have stuck with the synth'.
The problem is the way the engine reacts and what you do about it.
First things first:

Always make sure you pour at least 1/2 quart of oil in the filter before you screw it on.
Dry starts are bad for the engine - that's why there's an anti-drainback valve on the filter.
I don't care what some moron says otherwise....they should stick to serving coffee to old ladies.
Dinos' contain Parafins [wax],synth's don't [at least TRUE synths'].
Parafins don't melt and work until the engine gets up to operating temps.
If you're running synth' and switch over to dino,the oil may not get to where it needs to be in sufficient amounts to lube the parts the way they should be.
A good run on the highway may be in order.
The issue is that the parafins coat the internals when they get hot.
Change the oil type and everything gets out of whack.
The engine needs to be re-attuned to the oil type.
The only way to do that is to get it hot for a period or switch back to what it "knows".
Engines are only "human".

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2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

Itll be going back to full syn after xmas. Ill have $$ then

_________________

GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

We should fix our viton seals then too.

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2004 Grand Prix GTP
FWI | HP Tuner | 1.9 Rockers | Headers | 3.5 Pulley | 97-03 Control Arms w/GMPP sway bar|

That's what I said, lol.

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Alright, quick update. Changed the oil out and drove the car to work today. Noise is still there and just sounds terrible. I have noticed that in park and neutral it sounds god awful. In reverse or drive its not nearly as bad and once I give it throttle its goes away till I take my foot off the gas.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

Wonder if you cracked a flywheel. I can't hear the noise, since I'm on my phone, but something doesn't seem right about it being valve noise to me.

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One Big Ass Mistake America

the .mp4 isnt working for me?

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Im starting to think it could be somthing to do with the trans, possibly the flywheel... Because the engine is running strong.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

What about a fan shroud?

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2004 Grand Prix GTP
FWI | HP Tuner | 1.9 Rockers | Headers | 3.5 Pulley | 97-03 Control Arms w/GMPP sway bar|