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Old 08-21-2004, 04:57 PM   #1
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Default Oil Sludge

Man oh man....

Just changed my oil and found sludge on the end of the plug...I have no idea how it got there and it'* the first time I've ever seen it like that.

My 95SE has 160K (just turned), and I've changed the oil myself except for two times. I use the AC Delco PF47 and Valvoline 10W-30. My last oil change was done by my mechanic as he regasketed the upper and lower intake in April....

About two weeks ago I put some Chevron Techronn in the gas tank....could the sludge have come from this?

My neighbor told me that putting the Techron in the fuel tank gathers all the crap from the tank and pushes it through the system....doing the opposite of what it should...........any truth to this????

I've been in diagnosis mode trying to find my loss of power and hiccup..almost like a light backfire or pop....I think I'm losing the signal from my crank sensor??? Will a bad crank sensor cause bad performance/loss of power??......or just a no start???

Any other thoughts from the legends? What should I do?
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Old 08-21-2004, 06:33 PM   #2
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Default Re: Oil Sludge

Quote:
Originally Posted by beakah
Just changed my oil and found sludge on the end of the plug...I have no idea how it got there and it'* the first time I've ever seen it like that.?
If you don't change the oil regularly, you will see a little Sludge on the oil drain plug. This is no biggie. Howvever, if ALL the oil you are changing comes out looking like sludge, well, you would have other issues. Don't sweat the small sludge on the drain plug. Just wipe it off and you're good to go.

Quote:
Originally Posted by beakah
My 95SE has 160K (just turned), and I've changed the oil myself except for two times. I use the AC Delco PF47 and Valvoline 10W-30. My last oil change was done by my mechanic as he regasketed the upper and lower intake in April.....
At what intervals do you change your oil? The PF47 filter and Valvoline 10W-30 oil is good.

Quote:
Originally Posted by beakah
About two weeks ago I put some Chevron Techronn in the gas tank....could the sludge have come from this?
No way!!!

Quote:
Originally Posted by beakah
My neighbor told me that putting the Techron in the fuel tank gathers all the crap from the tank and pushes it through the system....doing the opposite of what it should...........any truth to this????
No! Techron will clean deposits that form on your fuel injectors and the intake valves.

Quote:
Originally Posted by beakah
I've been in diagnosis mode trying to find my loss of power and hiccup..almost like a light backfire or pop....I think I'm losing the signal from my crank sensor??? Will a bad crank sensor cause bad performance/loss of power??......or just a no start???

Any other thoughts from the legends? What should I do?
One of the Legendary Gearheads will chime in to offer you advice on this prob. Good Luck.
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Old 08-22-2004, 12:57 AM   #3
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Default

Your gas choice will not cause sludge to buildup. It could just be some stuff settling in the oil pan. If you're really worried keep an eye on your oil pressure (always a good thing) and if you're VERY worried, pull the oil pan.
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Old 08-22-2004, 02:59 AM   #4
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The sludge is actually from water forming in your oil pan. Its normal to a degree. If you have a colder t-stat you will notice more of it.
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