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    2006 GMC Sierra 5.8l factory oil

    Did my truck ship from the factory with synthetic, semi synthetic or dyno oil? Thanks, George
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    Toyota Rav4 rebuild

    I am completing a top end rebuild of a 2003 4 cylinder Rav4 with the 1AZFE 2.0L engine. I fell prey to the infamous stripped head bolt threads in the block problem at 165,000 miles. The engine overheated a couple of times when the problem showed up and the head was no doubt leaking for a while...
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    Hydraulic lifter noise

    I developed a lifter noise in my daily driver (2002 Blazer 4.3L) at around 150,000 miles. The truck has always used 5W30 Penzoil PYB. 20K miles per year of mixed driving but most trips are at least 15 miles. I have no external leaks but I consume 1/2 - 1 qt per 5K miles. I don't like miracle...
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