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Discussion Starter · #1 ·
Just switched my oil to the MOBILE 5000 recently and just needed a little bit of assurance on this product. I will be making a road trip soon pulling my camper, don't want my TB giving me hard times on this type of oil. I suppose i shouldve asked here first before i changed the oil. Never used synthetic blend since i purchased the TB, always used regular 5W-30.
 

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2003 chevy trailblazer_ls
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This was the SS forum, so I assumed you had a 6.0L and I would have reminded you that synthetic was factory-fill (Mobil 5000 is not synthetic).

That being said, I would recommend a synthetic, even for us 4.2L guys!
 
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