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Old 03-31-2005, 12:05 PM   #1
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Default what do all you Bonneville experts use for engine oil?

I have used Mobil 1 5W-40 for years in everything I have with much sucess for a long time, and no sludging in the Northstars either!
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Old 03-31-2005, 01:07 PM   #2
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Mobil 1 10W-30 Full Synthetic - SSEi w/ AC Delco filter --

No complaints, slightly better fuel economy and throttle response.
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Old 03-31-2005, 02:56 PM   #3
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Do Northstars have the sludge problems that all chrysler 2.7s have?
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Old 03-31-2005, 05:20 PM   #4
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Quote:
Originally Posted by silverws6ta
Mobil 1 10W-30 Full Synthetic - SSEi w/ AC Delco filter --
+1
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Old 03-31-2005, 05:24 PM   #5
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Quote:
Originally Posted by Rogue
Quote:
Originally Posted by silverws6ta
Mobil 1 10W-30 Full Synthetic - SSEi w/ AC Delco filter --
+1
+2
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Old 03-31-2005, 05:29 PM   #6
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Quote:
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Mobil 1 10W-30 Full Synthetic
+1
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+3
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Old 03-31-2005, 05:36 PM   #7
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Quote:
Originally Posted by inurok
Do Northstars have the sludge problems that all chrysler 2.7s have?

Sort of...the Northstars have oil rings on the pistons that "sludge" and need to be cleaned if that occurs. Synthetic oil prevents this. I went almost 90K on my 1995 Eldorado using Mobil 1 every 3K miles with out having to add 1 drop in between changes. Also, the 40 weight handles the heat better IMO.
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Old 03-31-2005, 05:39 PM   #8
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I use AC filters too on the cars, I get Isuzu filters for my Duramax, cheaper than the AC'*.
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Old 03-31-2005, 05:43 PM   #9
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Castrol GTX 5-30...

i use it cause i had a lifter knock in my old buick but it went away with this oil but no others...
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Old 03-31-2005, 09:07 PM   #10
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Quote:
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Mobil 1 10W-30 Full Synthetic
+1
+2
+3
+4
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