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I'm still inclined to think it's worn cam followers. As to what petro oil to use, any name brand will do; but I'm partial to Castrol, having used nothing but that (0w30 Syntec) in my 3.5. I used to have a Triumph TR-6, which never saw anything but Castrol (petro) for 10 years and 175,000 miles (20w50 racing oil.) By the time the TR-6 had that many miles, the engine was still strong and ran about 75-100 lbs. oil pressure under load. BTW-I wouldn't use that heavy a grade oil in the 3.5 however.
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Majestic Blue '06 3.5SE, manual, 20% tint, blacked out window chrome, E-Bay grill, red calipers, wai, debadged, titanium pedals, resonator and crimp-gone. My other ride's an '03 Silverado 2500HD 8.1 liter monster. Previously had an 03 2.5S automatic. http://s115.photobucket.com/albums/n..._2006/?start=0
Last edited by froedrick : 08-24-2008 at 03:13 AM.
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