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ticking or tapping from valve train


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That would be your call.

But I would never put 5W anthing oil in a pre 2000 Northstar. Not even if I lived in Barrow, Alaska.

I was just going by the owners manual. It says to put 5w-30 in if it's below 60 degrees and to use 10w-30 if it's 0 and above.


2006 Cadillac DTS Glacier Gold Tri-Coat with 175,000 miles

1993 Cadillac Sixty Special Gold Mist with 185,000 miles

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  • 8 years later...

On 2/18/2011 at 8:37 PM, scott y said:

I used to run a mid grade,(Canadian Tire brand oil)for years, and it developed a tick almost like an old Chrysler, our local engine rebuilder stated to lose that oil and replace it with Castrol gtx 10w30 and add 1 bottle of Lucas oil stabilizer,he said it's a good product.I did and the tick went away,immediately. I don't use Lucas anymore but Ithink that it helped...Shell Rotella T 10w30 will be my next oil unless you recommend otherwise.

hey man after you did this did the problem come back after that.. i have a 1999 seville sts with the 32 valve northstar the engine was rebuilt 2 years ago but makes this noise after an oil change.?


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I assume it was rebuilt due to the headbolt issue?

Which leads me to the next question, What happened that required rebuild? I would without a doubt run a zinc additive at each oil change.

If coolant got in the oil before the rebuild there may be issues that creep up later without extra maintenance. 

What area of the engine is the noise coming from?

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Nice, clean, luxury= fine automobile

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