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synthetic oil

  1. 04.5-05 LLY Duramax Powertrain
    I have spent hours today reading the thoughts on these forums about switching to and using amsoil and have been swayed to start using. Now I need to find out where to get the oil and filters. I would like my 05 Duramax to last quite a bit longer, even though I am having a hard time fighting the...
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